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- Pellaea glabella subsp. glabella (9 revisions)
- Polystichum californicum (9 revisions)
- Oedipodiaceae Illustrations (9 revisions)
- Argemone aurantiaca (9 revisions)
- Comptonia (9 revisions)
- Boerhavia coulteri var. coulteri (9 revisions)
- Quercus mohriana (9 revisions)
- Cylindropuntia ×kelvinensis (9 revisions)
- Cheilanthes wootonii (9 revisions)
- Woodsia obtusa subsp. occidentalis (9 revisions)
- Urtica gracilenta (9 revisions)
- Argyrochosma incana (9 revisions)
- Anemiaceae (9 revisions)
- Plagiotheciaceae Illustrations (9 revisions)
- Ranunculus eschscholtzii var. eschscholtzii (9 revisions)
- Neolloydia conoidea var. conoidea (9 revisions)
- Quercus bicolor (9 revisions)
- Alnus rubra (9 revisions)
- Cylindropuntia abyssi (9 revisions)
- Thelypteris resinifera (9 revisions)
- Picea rubens (9 revisions)
- Corylus cornuta subsp. californica (9 revisions)
- Pteridaceae Illustrations (9 revisions)
- Tephroseris lindstroemii (9 revisions)
- Cimicifuga laciniata (9 revisions)
- Fatoua villosa (9 revisions)
- Aquilegia desertorum (9 revisions)
- Grusonia emoryi (9 revisions)
- Piper auritum (9 revisions)
- Chelone cuthbertii (9 revisions)
- Isoëtes maritima (9 revisions)
- Pentagramma pallida (9 revisions)
- Papaver orientale (9 revisions)
- Selaginella subg. Stachygynandrum (9 revisions)
- Guzmania (9 revisions)
- Sapotaceae Illustrations (9 revisions)
- Anemopsis (9 revisions)
- Schisandraceae (9 revisions)
- Calycocarpum lyonii (9 revisions)
- Opuntia tortispina (9 revisions)
- Licaria (9 revisions)
- Collinsia multicolor (9 revisions)
- Weissia ludoviciana (9 revisions)
- Fumariaceae (9 revisions)
- Botrychium subg. Sceptridium (9 revisions)
- Splachnobryaceae Illustrations (9 revisions)
- Eriogonum ochrocephalum (9 revisions)
- Trema lamarckiana (9 revisions)
- Ranunculus lobbii (9 revisions)
- Opuntia macrocentra (9 revisions)
- Myrica heterophylla (9 revisions)
- Grimmia crinitoleucophaea (9 revisions)
- Pinus albicaulis (9 revisions)
- Azolla mexicana (9 revisions)
- Delphinium nuttallii (9 revisions)
- Blechnum (9 revisions)
- Timmiaceae Illustrations (9 revisions)
- Acoraceae Illustrations (9 revisions)
- Anemone caroliniana (9 revisions)
- Delphinium decorum subsp. tracyi (9 revisions)
- Opuntia basilaris var. treleasei (9 revisions)
- Berberis pinnata subsp. pinnata (9 revisions)
- Pinus attenuata (9 revisions)
- Nymphaea jamesoniana (9 revisions)
- Cotula coronopifolia (9 revisions)
- Nothocalaïs cuspidata (9 revisions)
- Arecaceae Illustrations (9 revisions)
- Canellaceae (9 revisions)
- Delphinium basalticum (9 revisions)
- Nopalea cochenillifera (9 revisions)
- Juglandaceae (9 revisions)
- Penstemon (9 revisions)
- Juniperus occidentalis var. australis (9 revisions)
- Selaginella rupestris (9 revisions)
- Quercus garryana var. breweri (9 revisions)
- Selaginella ×neomexicana (9 revisions)
- Bruchiaceae Illustrations (9 revisions)
- Asimina longifolia var. longifolia (9 revisions)
- Crataegus ×collicola (9 revisions)
- Ranunculus austro-oreganus (9 revisions)
- Cimicifuga (9 revisions)
- Peniocereus striatus (9 revisions)
- Eschscholzia glyptosperma (9 revisions)
- Polytrichastrum (9 revisions)
- Portulaca umbraticola subsp. lanceolata (9 revisions)
- Arctostaphylos (9 revisions)
- Botrychium simplex (9 revisions)
- Quercus margarettae (9 revisions)
- Pleopeltis riograndensis (9 revisions)
- Caricaceae Illustrations (9 revisions)
- Bellis (9 revisions)
- Berberis swaseyi (9 revisions)
- Crataegus ×vailiae (9 revisions)
- Betulaceae subfam. Betuloideae (9 revisions)
- Echinocereus nicholii (9 revisions)
- Delphinium sect. Elatopsis (9 revisions)
- Glinus radiatus (9 revisions)
- Isoëtes lithophila (9 revisions)
- Pleopeltis astrolepis (9 revisions)
- Dicentra uniflora (9 revisions)
- Schizaeaceae (9 revisions)
- Juncus cooperi (9 revisions)
- Cucurbitaceae Illustrations (9 revisions)
- Laënnecia turnerorum (9 revisions)
- Ficus aurea (9 revisions)
- Trollius riederianus (9 revisions)
- Thalictrum sect. Heterogamia (9 revisions)
- Echinocereus poselgeri (9 revisions)
- Dicentra (9 revisions)
- Bucklandiella occidentalis (9 revisions)
- Allionia choisyi (9 revisions)
- Brodiaea californica (9 revisions)
- Atriplex argentea var. longitrichoma (9 revisions)
- Taxus floridana (9 revisions)
- Carex microdonta (9 revisions)
- Argemone hispida (9 revisions)
- Argyrochosma limitanea subsp. limitanea (9 revisions)
- Isoëtes tegetiformans (9 revisions)
- Ebenaceae Illustrations (9 revisions)
- Anemone berlandieri (9 revisions)
- Stellaria borealis subsp. borealis (9 revisions)
- Argemone pleiacantha subsp. pinnatisecta (9 revisions)
- Asarum hartwegii (9 revisions)
- Pachycereus schottii (9 revisions)
- Delphinium patens subsp. montanum (9 revisions)
- Cypripedium parviflorum var. pubescens (9 revisions)
- Thelypteris (9 revisions)
- Polystichum (9 revisions)
- Pilea fontana (9 revisions)
- Gymnocarpium appalachianum (9 revisions)
- Juncus parryi (9 revisions)
- Juncus debilis (9 revisions)
- Aspleniaceae (9 revisions)
- Gigaspermaceae Illustrations (9 revisions)
- Laportea (9 revisions)
- Nymphaea tetragona (9 revisions)
- Betula uber (9 revisions)
- Echinomastus johnsonii (9 revisions)
- Papaver pygmaeum (9 revisions)
- Tripterocalyx micranthus (9 revisions)
- Asplenium resiliens (9 revisions)
- Polystichum kruckebergii (9 revisions)
- Delphinium xantholeucum (9 revisions)
- Pentagramma triangularis subsp. maxonii (9 revisions)
- Abies amabilis (9 revisions)
- Hypopterygiaceae Illustrations (9 revisions)
- Eriogonum longifolium (9 revisions)
- Papaver dubium (9 revisions)
- Berberis haematocarpa (9 revisions)
- Nuphar rubrodisca (9 revisions)
- Betula pubescens subsp. pubescens (9 revisions)
- Galenia pubescens (9 revisions)
- Isoëtes melanopoda (9 revisions)
- Microgramma (9 revisions)
- Ulmus serotina (9 revisions)
- Campyloneurum angustifolium (9 revisions)
- Sagittaria platyphylla (9 revisions)
- Botrychium subg. Osmundopteris (9 revisions)
- Leucobryaceae Illustrations (9 revisions)
- Ranunculus occidentalis var. occidentalis (9 revisions)
- Hesperomecon (9 revisions)
- Asarum canadense (9 revisions)
- Ancistrocactus scheeri (9 revisions)
- Delphinium robustum (9 revisions)
- Mesembryanthemum nodiflorum (9 revisions)
- Crossidium crassinervium (9 revisions)
- Psilotum nudum (9 revisions)
- Deparia (9 revisions)
- Cimicifuga americana (9 revisions)
- Cryptogramma sitchensis (9 revisions)
- Juncaceae (9 revisions)
- Lygodium japonicum (9 revisions)
- Mielichhoferiaceae Illustrations (9 revisions)
- Phemeranthus parviflorus (9 revisions)
- Stipulicida setacea (9 revisions)
- Calycocarpum (9 revisions)
- Delphinium sect. Diedropetala (9 revisions)
- Thelocactus bicolor (9 revisions)
- Pereskia (9 revisions)
- Isoëtes engelmannii (9 revisions)
- Tectaria incisa (9 revisions)
- Ranunculus adoneus (9 revisions)
- Abies lasiocarpa (9 revisions)
- Selaginella uncinata (9 revisions)
- Ophioglossaceae Illustrations (9 revisions)
- Coryphantha robertii (9 revisions)
- Cocculus (9 revisions)
- Cylindropuntia prolifera (9 revisions)
- Ephedra funerea (9 revisions)
- Isoëtes bolanderi (9 revisions)
- Achlys californica (9 revisions)
- Selaginella braunii (9 revisions)
- Platanaceae Illustrations (9 revisions)
- Oxalis frutescens subsp. angustifolia (9 revisions)
- Epithelantha (9 revisions)
- Alnus incana subsp. tenuifolia (9 revisions)
- Ranunculus inamoenus var. inamoenus (9 revisions)
- Cylindropuntia munzii (9 revisions)
- Pleopeltis (9 revisions)
- Pinus palustris (9 revisions)
- Selaginella subg. Selaginella (9 revisions)
- Pterigynandraceae Illustrations (9 revisions)
- Oönopsis foliosa (9 revisions)
- Scleranthus perennis (9 revisions)
- Quercus sinuata var. sinuata (9 revisions)
- Grusonia schottii (9 revisions)
- Delphinium umbraculorum (9 revisions)
- Chelone lyonii (9 revisions)
- Pteris vittata (9 revisions)
- Asplenium adiantum-nigrum (9 revisions)
- Equisetum telmateia subsp. braunii (9 revisions)
- Eriophorum gracile (9 revisions)
- Sarraceniaceae Illustrations (9 revisions)
- Eriogonum jamesii (9 revisions)
- Eriogonum rosense (9 revisions)
- Delphinium nudicaule (9 revisions)
- Opuntia stricta (9 revisions)
- Clematis morefieldii (9 revisions)
- Collinsia antonina (9 revisions)
- Notholaena californica subsp. californica (9 revisions)
- Pinus edulis (9 revisions)
- Delphinium hansenii subsp. kernense (9 revisions)
- Sequoiadendron (9 revisions)
- Staphyleaceae Illustrations (9 revisions)
- Ranunculus rhomboideus (9 revisions)
- Argemone squarrosa subsp. squarrosa (9 revisions)
- Clematis recta (9 revisions)
- Opuntia phaeacantha (9 revisions)
- Trollius (9 revisions)
- Collinsia corymbosa (9 revisions)
- Polystichum setigerum (9 revisions)
- Pinus torreyana subsp. insularis (9 revisions)
- Quercus stellata (9 revisions)
- Matteuccia (9 revisions)
- Tropaeolaceae Illustrations (9 revisions)
- Agavaceae Illustrations (9 revisions)
- Krameria (9 revisions)
- Eriogonum wrightii (9 revisions)
- Anemone deltoidea (9 revisions)
- Delphinium uliginosum (9 revisions)
- Romneya trichocalyx (9 revisions)
- Opuntia basilaris var. longiareolata (9 revisions)
- Annona (9 revisions)
- Diplazium lonchophyllum (9 revisions)
- Cheiroglossa (9 revisions)
- Delphinium recurvatum (9 revisions)
- Nothocalaïs nigrescens (9 revisions)
- Aristolochiaceae Illustrations (9 revisions)
- Petrophytum caespitosum subsp. acuminatum (9 revisions)
- Carya pallida (9 revisions)
- Ranunculus orthorhynchus var. platyphyllus (9 revisions)
- Nuphar polysepala (9 revisions)
- Erythranthe suksdorfii (9 revisions)
- Consolea (9 revisions)
- Rumex sect. Rumex (9 revisions)
- Papaveraceae (9 revisions)
- Juniperus communis var. megistocarpa (9 revisions)
- Thelypteris tetragona (9 revisions)
- Tamarix (9 revisions)
- Thalictrum confine (9 revisions)
- Bryaceae Illustrations (9 revisions)
- Quercus laurifolia (9 revisions)
- Crataegus ×disperma (9 revisions)
- Potentilla sect. Aureae (9 revisions)
- Anemone edwardsiana var. petraea (9 revisions)
- Ranunculus ambigens (9 revisions)
- Talinopsis (9 revisions)
- Listera auriculata (9 revisions)
- Botrychium mormo (9 revisions)
- Draba lactea (9 revisions)
- Isoëtes melanospora (9 revisions)
- Caryophyllaceae Illustrations (9 revisions)
- Lorandersonia (9 revisions)
- Canbya (9 revisions)
- Aconitum reclinatum (9 revisions)
- Boerhavia erecta (9 revisions)
- Parietaria (9 revisions)
- Glinus lotoides (9 revisions)
- Pityrogramma (9 revisions)
- Pellaea mucronata subsp. californica (9 revisions)
- Ranunculus occidentalis var. dissectus (9 revisions)
- Torreya (9 revisions)
- Cupressaceae Illustrations (9 revisions)
- Delphinium ramosum (9 revisions)
- Eranthis hyemalis (9 revisions)
- Platanus (9 revisions)
- Hylocereus (9 revisions)
- Ranunculus californicus var. californicus (9 revisions)
- Abronia (9 revisions)
- Isoëtes howellii (9 revisions)
- Pilularia (9 revisions)
- Arctomecon merriamii (9 revisions)
- Ginkgo (9 revisions)
- Thelypteris augescens (9 revisions)
- Encalyptaceae Illustrations (9 revisions)
- Chrysothamnus scopulorum (9 revisions)
- Eriogonum strictum (9 revisions)
- Quercus phellos (9 revisions)
- Ranunculus alismifolius var. davisii (9 revisions)
- Roemeria refracta (9 revisions)
- Carnegiea (9 revisions)
- Laportea canadensis (9 revisions)
- Abronia villosa var. villosa (9 revisions)
- Woodsia oregana subsp. cathcartiana (9 revisions)
- Polypodium calirhiza (9 revisions)
- Consolida tenuissima (9 revisions)
- Thelypteris subg. Meniscium (9 revisions)
- Marsilea (9 revisions)
- Ginkgoaceae Illustrations (9 revisions)
- Solidago multiradiata (9 revisions)
- Aconitum uncinatum (9 revisions)
- Delphinium (9 revisions)
- Delphinium glaucum (9 revisions)
- Echinomastus erectocentrus (9 revisions)
- Quercus imbricaria (9 revisions)
- Tripterocalyx carneus (9 revisions)
- Tripterocalyx wootonii (9 revisions)
- Pinus muricata (9 revisions)
- Pinus elliottii var. densa (9 revisions)
- Delphinium variegatum subsp. kinkiense (9 revisions)
- Cheilanthes covillei (9 revisions)
- Juncus secundus (9 revisions)
- Phanerophlebia umbonata (9 revisions)
- Illiciaceae Illustrations (9 revisions)
- Sanguinaria canadensis (9 revisions)
- Humulus japonicus (9 revisions)
- Sclerocactus mesae-verdae (9 revisions)
- Galenia secunda (9 revisions)
- Pellaea ovata (9 revisions)
- Maxonia (9 revisions)
- Enemion savilei (9 revisions)
- Polypodium triseriale (9 revisions)
- Woodsia (9 revisions)
- Leucodontaceae Illustrations (9 revisions)
- Delphinium subsect. Multiplex (9 revisions)
- Enemion (9 revisions)
- Pediocactus (9 revisions)
- Dicentra eximia (9 revisions)
- Carpobrotus (9 revisions)
- Dryopteris cinnamomea (9 revisions)
- Carex sect. Chlorostachyae (9 revisions)
- Delphinium parryi subsp. parryi (9 revisions)
- Grammitidaceae (9 revisions)
- Baccharis douglasii (9 revisions)
- Juniperus californica (9 revisions)
- Mniaceae Illustrations (9 revisions)
- Phemeranthus rugospermus (9 revisions)
- Eschscholzia lemmonii (9 revisions)
- Thelocactus bicolor var. bicolor (9 revisions)
- Ranunculus populago (9 revisions)
- Pereskia aculeata (9 revisions)
- Ephedra aspera (9 revisions)
- Argyrochosma jonesii (9 revisions)
- Litsea aestivalis (9 revisions)
- Ephedraceae (9 revisions)
- Equisetum laevigatum (9 revisions)
- Orchidaceae Illustrations (9 revisions)
- Elatine (9 revisions)
- Celtis occidentalis (9 revisions)
- Caltha (9 revisions)
- Coryphantha chaffeyi (9 revisions)
- Thalictrum polycarpum (9 revisions)
- Cylindropuntia versicolor (9 revisions)
- Notholaena greggii (9 revisions)
- Isoëtes georgiana (9 revisions)
- Papaver sect. Argemonidium (9 revisions)
- Pinus longaeva (9 revisions)
- Selaginella acanthonota (9 revisions)
- Pleuroziopsaceae Illustrations (9 revisions)
- Ranunculus andersonii (9 revisions)
- Platanus racemosa (9 revisions)
- Berberis repens (9 revisions)
- Phaulothamnus (9 revisions)
- Ephedra pedunculata (9 revisions)
- Ophioglossum pusillum (9 revisions)
- Pellaea truncata (9 revisions)
- Pterobryaceae Illustrations (9 revisions)
- Eranthis (9 revisions)
- Berberis fendleri (9 revisions)
- Delphinium inopinum (9 revisions)
- Grusonia kunzei (9 revisions)
- Castanea ozarkensis (9 revisions)
- Chelone glabra (9 revisions)
- Anemia (9 revisions)
- Ephedra nevadensis (9 revisions)
- Quercus gravesii (9 revisions)
- Polystichum imbricans subsp. imbricans (9 revisions)
- Saururaceae Illustrations (9 revisions)
- Mikania batatifolia (9 revisions)
- Delphinium subsect. Virescens (9 revisions)
- Adlumia fungosa (9 revisions)
- Ranunculus gormanii (9 revisions)
- Opuntia chlorotica (9 revisions)
- Lindera benzoin (9 revisions)
- Iris (sect. Limniris) ser. Vernae (9 revisions)
- Collinsia parryi (9 revisions)
- Draba alpina (9 revisions)
- Ranunculus micranthus (9 revisions)
- Polystichum microchlamys (9 revisions)
- Carex timida (9 revisions)
- Eriogonum hemipterum (9 revisions)
- Stemonaceae Illustrations (9 revisions)
- Nelumbonaceae (9 revisions)
- Fumaria capreolata (9 revisions)
- Delphinium bicolor subsp. calcicola (9 revisions)
- Opuntia ×curvispina (9 revisions)
- Carya illinoinensis (9 revisions)
- Collinsia bartsiifolia (9 revisions)
- Zamia integrifolia (9 revisions)
- Thelypteris subg. Stegnogramma (9 revisions)
- Illicium floridanum (9 revisions)
- Juniperus ashei (9 revisions)
- Turneraceae Illustrations (9 revisions)
- Aizoaceae Illustrations (9 revisions)
- Delphinium carolinianum subsp. virescens (9 revisions)
- Umbellularia californica var. californica (9 revisions)
- Quercus austrina (9 revisions)
- Opuntia basilaris var. brachyclada (9 revisions)
- Thalictrum thalictroides (9 revisions)
- Keckiella antirrhinoides var. antirrhinoides (9 revisions)
- Thelypteris pilosa var. alabamensis (9 revisions)
- Ephedra torreyana (9 revisions)
- Chrysolepis chrysophylla var. minor (9 revisions)
- Juncus chlorocephalus (9 revisions)
- Aspleniaceae Illustrations (9 revisions)
- Aconitum (9 revisions)
- Boehmeria (9 revisions)
- Celtis pallida (9 revisions)
- Consolea corallicola (9 revisions)
- Rumex hymenosepalus (9 revisions)
- Adlumia (9 revisions)
- Abies fraseri (9 revisions)
- Juniperus sect. Sabina (9 revisions)
- Carex viridula var. viridula (9 revisions)
- Macleaya (9 revisions)
- Lygodium microphyllum (9 revisions)
- Bryoxiphiaceae Illustrations (9 revisions)
- Aristolochia coryi (9 revisions)
- Crataegus ×dispessa (9 revisions)
- Corydalis flavula (9 revisions)
- Quercus tardifolia (9 revisions)
- Echinocereus enneacanthus (9 revisions)
- Quercus ellipsoidalis (9 revisions)
- Talinopsis frutescens (9 revisions)
- Atriplex sect. Spongiocarpus (9 revisions)
- Pinus torreyana subsp. torreyana (9 revisions)
- Acrostichum aureum (9 revisions)
- Nectandra coriacea (9 revisions)
- Rhynchospora (9 revisions)
- Pteris tripartita (9 revisions)
- Casuarinaceae Illustrations (9 revisions)
- Lorandersonia baileyi (9 revisions)
- Ulmus thomasii (9 revisions)
- Quercus john-tuckeri (9 revisions)
- Echinocereus ledingii (9 revisions)
- Jeffersonia (9 revisions)
- Mirabilis rotundifolia (9 revisions)
- Asplenium verecundum (9 revisions)
- Pteridium aquilinum var. pseudocaudatum (9 revisions)
- Limnanthes sect. Inflexae (9 revisions)
- Berberis trifoliolata (9 revisions)
- Polystichum acrostichoides (9 revisions)
- Pinus cembroides (9 revisions)
- Cymodoceaceae Illustrations (9 revisions)
- Vitaceae (9 revisions)
- Aquilegia coerulea var. pinetorum (9 revisions)
- Achlys triphylla (9 revisions)
- Fatoua (9 revisions)
- Hylocereus undatus (9 revisions)
- Dicentra nevadensis (9 revisions)
- Abronia fragrans (9 revisions)
- Palhinhaea cernua (9 revisions)
- Aspidotis carlotta-halliae (9 revisions)
- Quercus ajoensis (9 revisions)
- Selaginella hansenii (9 revisions)
- Nephrolepis ×averyi (9 revisions)
- Entodontaceae Illustrations (9 revisions)
- Chrysothamnus stylosus (9 revisions)
- Thalictrum heliophilum (9 revisions)
- Trollius albiflorus (9 revisions)
- Nandina domestica (9 revisions)
- Boerhavia megaptera (9 revisions)
- Ostrya (9 revisions)
- Abronia villosa var. aurita (9 revisions)
- Ranunculus eschscholtzii var. trisectus (9 revisions)
- Ginkgo biloba (9 revisions)
- Gleicheniaceae Illustrations (9 revisions)
- Eschscholzia caespitosa (9 revisions)
- Echinomastus erectocentrus var. erectocentrus (9 revisions)
- Betulaceae subfam. Coryloideae (9 revisions)
- Echinomastus erectocentrus var. acunensis (9 revisions)
- Eschscholzia lemmonii subsp. kernensis (9 revisions)
- Tripterocalyx crux-maltae (9 revisions)
- Mirabilis laevis var. villosa (9 revisions)
- Juniperus scopulorum (9 revisions)
- Selaginella eremophila (9 revisions)
- Carex conoidea (9 revisions)
- Arachniodes simplicior (9 revisions)
- Polypodium hesperium (9 revisions)
- Iridaceae Illustrations (9 revisions)
- Aquilegia shockleyi (9 revisions)
- Annona glabra (9 revisions)
- Ranunculus flammula var. ovalis (9 revisions)
- Boerhavia purpurascens (9 revisions)
- Urtica (9 revisions)
- Sesuvium (9 revisions)
- Notholaena californica subsp. leucophylla (9 revisions)
- Thelypteris subg. Lastrea (9 revisions)
- Coptis laciniata (9 revisions)
- Adiantum pedatum (9 revisions)
- Leucophanaceae Illustrations (9 revisions)
- Berberis bealei (9 revisions)
- Anemone narcissiflora var. monantha (9 revisions)
- Delphinium hesperium subsp. cuyamacae (9 revisions)
- Pediocactus sileri (9 revisions)
- Eschscholzia hypecoides (9 revisions)
- Carpobrotus chilensis (9 revisions)
- Abies concolor (9 revisions)
- Cheilanthes eatonii (9 revisions)
- Delphinium subsect. Subscaposa (9 revisions)
- Viola orbiculata (9 revisions)
- Selaginella wallacei (9 revisions)
- Pinus strobiformis (9 revisions)
- Molluginaceae Illustrations (9 revisions)
- Phemeranthus sediformis (9 revisions)
- Anemone virginiana var. cylindroidea (9 revisions)
- Thelocactus bicolor var. flavidispinus (9 revisions)
- Anemone quinquefolia var. quinquefolia (9 revisions)
- Eichhornia crassipes (9 revisions)
- Brachythecium erythrorrhizon (9 revisions)
- Isoëtes louisianensis (9 revisions)
- Botrychium campestre (9 revisions)
- Carya glabra (9 revisions)
- Cystopteris protrusa (9 revisions)
- Rudbeckia klamathensis (9 revisions)
- Hymenophyllum tunbrigense (9 revisions)
- Orthodontiaceae Illustrations (9 revisions)
- Alnus maritima (9 revisions)
- Delphinium depauperatum (9 revisions)
- Coryphantha dasyacantha (9 revisions)
- Liriodendron tulipifera (9 revisions)
- Thelypteris ovata var. ovata (9 revisions)
- Dryopteris marginalis (9 revisions)
- Odontosoria (9 revisions)
- Plumbaginaceae Illustrations (9 revisions)
- Anemone virginiana var. alba (9 revisions)
- Epithelantha micromeris var. micromeris (9 revisions)
- Quercus nigra (9 revisions)
- Aconitum maximum subsp. maximum (9 revisions)
- Cylindropuntia ganderi (9 revisions)
- Isoëtes prototypus (9 revisions)
- Ophioglossum petiolatum (9 revisions)
- Ficus benjamina (9 revisions)
- Osmundaceae (9 revisions)
- Corrigiola litoralis (9 revisions)
- Ptychomitriaceae Illustrations (9 revisions)
- Diphylleia cymosa (9 revisions)
- Pterostegia (9 revisions)
- Fothergilla gardenii (9 revisions)
- Delphinium antoninum (9 revisions)
- Grusonia clavata (9 revisions)
- Cheilanthes lanosa (9 revisions)
- Cheilanthes tomentosa (9 revisions)
- Parietaria praetermissa (9 revisions)
- Carex aquatilis var. minor (9 revisions)
- Thelypteris interrupta (9 revisions)
- Saxifragaceae Illustrations (9 revisions)
- Ranunculus sect. Cyrtorhyncha (9 revisions)
- Corydalis caseana subsp. hastata (9 revisions)
- Trollius laxus (9 revisions)
- Boerhavia (9 revisions)
- Collinsia callosa (9 revisions)
- Diphasiastrum tristachyum (9 revisions)
- Ephedra coryi (9 revisions)
- Clematis subg. Viorna (9 revisions)
- Carex media (9 revisions)
- Callitris (9 revisions)
- Stereophyllaceae Illustrations (9 revisions)
- Quercus durata (9 revisions)
- Moraceae (9 revisions)
- Menispermum canadense (9 revisions)
- Opuntia ×spinosibacca (9 revisions)
- Parietaria hespera var. californica (9 revisions)
- Thuja plicata (9 revisions)
- Sphagnum platyphyllum (9 revisions)
- Botrychium pallidum (9 revisions)
- Ranunculus acriformis var. montanensis (9 revisions)
- Ulmus parvifolia (9 revisions)
- Typhaceae Illustrations (9 revisions)
- Alismataceae Illustrations (9 revisions)
- Lindera subcoriacea (9 revisions)
- Hexastylis arifolia var. callifolia (9 revisions)
- Quercus tomentella (9 revisions)
- Opuntia aurea (9 revisions)
- Iris (sect. Limniris) ser. Hexagonae (9 revisions)
- Keckiella antirrhinoides var. microphylla (9 revisions)
- Jeffersonia diphylla (9 revisions)
- Eriogonum deflexum (9 revisions)
- Nothocalaïs troximoides (9 revisions)
- Delphinium tricorne (9 revisions)
- Fumaria officinalis (9 revisions)
- Argemone gracilenta (9 revisions)
- Cactaceae subfam. Cactoideae (9 revisions)
- Aquilegia vulgaris (9 revisions)
- Marsilea macropoda (9 revisions)
- Cystopteris laurentiana (9 revisions)
- Myosurus minimus (9 revisions)
- Carex heleonastes (9 revisions)
- Selaginella douglasii (9 revisions)
- Eriogonum tenellum (9 revisions)
- Burmanniaceae Illustrations (9 revisions)
- Eschscholzia (9 revisions)
- Crataegus ×fretalis (9 revisions)
- Peperomia alata (9 revisions)
- Vancouveria chrysantha (9 revisions)
- Echinocereus enneacanthus var. enneacanthus (9 revisions)
- Talinum (9 revisions)
- Astrolepis windhamii (9 revisions)
- Tsuga heterophylla (9 revisions)
- Campyloneurum (9 revisions)
- Catoscopiaceae Illustrations (9 revisions)
- Lorandersonia linifolia (9 revisions)
- Ranunculus occidentalis var. ultramontanus (9 revisions)
- Brasenia schreberi (9 revisions)
- Echinocereus triglochidiatus (9 revisions)
- Quercus pumila (9 revisions)
- Bucklandiella affinis (9 revisions)
- Mirabilis sect. Oxybaphoides (9 revisions)
- Mirabilis gigantea (9 revisions)
- Aloe (9 revisions)
- Larix lyallii (9 revisions)
- Glaucium corniculatum (9 revisions)
- Pinus echinata (9 revisions)
- Diplazium (9 revisions)
- Cyperaceae Illustrations (9 revisions)
- Adonis vernalis (9 revisions)
- Aristolochia californica (9 revisions)
- Aquilegia formosa var. formosa (9 revisions)
- Selenicereus (9 revisions)
- Peperomia (9 revisions)
- Phytolacca heterotepala (9 revisions)
- Woodsia scopulina subsp. appalachiana (9 revisions)
- Alnus oblongifolia (9 revisions)
- Asplenium vespertinum (9 revisions)
- Isoëtes riparia (9 revisions)
- Ephedraceae Illustrations (9 revisions)
- Ranunculus fascicularis (9 revisions)
- Papaver gorodkovii (9 revisions)
- Carnegiea gigantea (9 revisions)
- Quercus douglasii (9 revisions)
- Abronia ammophila (9 revisions)
- Selaginella lepidophylla (9 revisions)
- Dicentra canadensis (9 revisions)
- Juniperus deppeana var. deppeana (9 revisions)
- Ptychosperma (9 revisions)
- Dennstaedtia globulifera (9 revisions)
- Grammitidaceae Illustrations (9 revisions)
- Cotoneaster ×suecicus (9 revisions)
- Humulus lupulus var. lupuloides (9 revisions)
- Delphinium alabamicum (9 revisions)
- Castanea pumila (9 revisions)
- Stellaria longipes subsp. longipes (9 revisions)
- Aristolochia wrightii (9 revisions)
- Quercus coccinea (9 revisions)
- Echinomastus mariposensis (9 revisions)
- Corydalis micrantha subsp. australis (9 revisions)
- Rivina (9 revisions)
- Pellaea (9 revisions)
- Isoëtes nuttallii (9 revisions)
- Quercus durata var. gabrielensis (9 revisions)
- Asplenium trichomanes-dentatum (9 revisions)
- Aponogeton distachyos (9 revisions)
- Pinaceae (9 revisions)
- Isoëtaceae Illustrations (9 revisions)
- Paronychia fastigiata (9 revisions)
- Hydrastis canadensis (9 revisions)
- Papaver (9 revisions)
- Ranunculus testiculatus (9 revisions)
- Sclerocactus pubispinus (9 revisions)
- Sesuvium maritimum (9 revisions)
- Selaginella arizonica (9 revisions)
- Lygodium palmatum (9 revisions)
- Betula populifolia (9 revisions)
- Selaginella mutica var. limitanea (9 revisions)
- Liliaceae Illustrations (9 revisions)
- Carya (9 revisions)
- Casuarina cunninghamiana subsp. cunninghamiana (9 revisions)
- Pediocactus peeblesianus (9 revisions)
- Delphinium elatum (9 revisions)
- Carpobrotus edulis (9 revisions)
- Isopterygium tenerum (9 revisions)
- Thelypteris subg. Goniopteris (9 revisions)
- Dicranopteris (9 revisions)
- Carex capillaris (9 revisions)
- Quercus similis (9 revisions)
- Polystichum dudleyi (9 revisions)
- Torreya californica (9 revisions)
- Moraceae Illustrations (9 revisions)
- Phemeranthus spinescens (9 revisions)
- Minuartia obtusiloba (9 revisions)
- Thalictrum cooleyi (9 revisions)
- Urtica dioica subsp. holosericea (9 revisions)
- Hamatocactus (9 revisions)
- Pereskia grandifolia var. grandifolia (9 revisions)
- Agave utahensis var. eborispina (9 revisions)
- Abies grandis (9 revisions)
- Delphinium parryi subsp. blochmaniae (9 revisions)
- Selaginella weatherbiana (9 revisions)
- Hymenophyllum wrightii (9 revisions)
- Orthotrichaceae Illustrations (9 revisions)
- Fagaceae (9 revisions)
- Trema (9 revisions)
- Coryphantha duncanii (9 revisions)
- Clematis hirsutissima var. scottii (9 revisions)
- Cylindropuntia bigelovii var. bigelovii (9 revisions)
- Pleopeltis polylepis var. erythrolepis (9 revisions)
- Bommeria hispida (9 revisions)
- Asimina incana (9 revisions)
- Poaceae Illustrations (9 revisions)
- Delphinium viridescens (9 revisions)
- Epithelantha bokei (9 revisions)
- Betula pubescens subsp. tortuosa (9 revisions)
- Argemone munita subsp. argentea (9 revisions)
- Fissidens pellucidus (9 revisions)
- Cylindropuntia echinocarpa (9 revisions)
- Hygroamblystegium varium var. varium (9 revisions)
- Selaginella scopulorum (9 revisions)
- Quercus chrysolepis (9 revisions)
- Botrychium crenulatum (9 revisions)
- Racopilaceae Illustrations (9 revisions)
- Solidago subsect. Venosae (9 revisions)
- Eriogonum douglasii (9 revisions)
- Quercus hemisphaerica (9 revisions)
- Papaver alboroseum (9 revisions)
- Grusonia parishii (9 revisions)
- Magnolia macrophylla (9 revisions)
- Chelone obliqua var. obliqua (9 revisions)
- Dennstaedtia bipinnata (9 revisions)
- Equisetum ramosissimum subsp. ramosissimum (9 revisions)
- Cheilanthes villosa (9 revisions)
- Chorizanthe brevicornu (9 revisions)
- Scheuchzeriaceae Illustrations (9 revisions)
- Magnolia pyramidata (9 revisions)
- Clematis versicolor (9 revisions)
- Consolida ajacis (9 revisions)
- Opuntia strigil (9 revisions)
- Arctomecon californica (9 revisions)
- Elodium elodioides (9 revisions)
- Polystichum imbricans subsp. curtum (9 revisions)
- Cheilanthes fendleri (9 revisions)
- Styracaceae Illustrations (9 revisions)
- Quercus hypoleucoides (9 revisions)
- Quercus georgiana (9 revisions)
- Ranunculus sardous (9 revisions)
- Opuntia oricola (9 revisions)
- Ranunculus subg. Cyrtorhyncha (9 revisions)
- Selaginella rupincola (9 revisions)
- Cystopteris reevesiana (9 revisions)
- Clematis baldwinii (9 revisions)
- Nigella (9 revisions)
- Ulmaceae Illustrations (9 revisions)
- Aloaceae Illustrations (9 revisions)
- Adolphia infesta (9 revisions)
- Spiraea ×pyramidata (9 revisions)
- Delphinium variegatum subsp. thornei (9 revisions)
- Ranunculus sceleratus var. multifidus (9 revisions)
- Myosurus (9 revisions)
- Boerhavia gracillima (9 revisions)
- Aquilegia laramiensis (9 revisions)
- Keckiella cordifolia (9 revisions)
- Thelypteris ovata var. lindheimeri (9 revisions)
- Nephrolepis cordifolia (9 revisions)
- Microseris (9 revisions)
- Aulacomniaceae Illustrations (9 revisions)
- Phyllanthus abnormis var. riograndensis (9 revisions)
- Carya myristiciformis (9 revisions)
- Betula alleghaniensis (9 revisions)
- Hexastylis (9 revisions)
- Harrisia (9 revisions)
- Botrychium pseudopinnatum (9 revisions)
- Cabomba (9 revisions)
- Juncus kelloggii (9 revisions)
- Butomaceae Illustrations (9 revisions)
- Crataegus ×incaedua (9 revisions)
- Anemone lancifolia (9 revisions)
- Echinocereus enneacanthus var. brevispinus (9 revisions)
- Talinum fruticosum (9 revisions)
- Botrychium lanceolatum subsp. angustisegmentum (9 revisions)
- Asplenium adulterinum (9 revisions)
- Celtis tenuifolia (9 revisions)
- Botrychium ascendens (9 revisions)
- Ceratophyllaceae Illustrations (9 revisions)
- Laënnecia sophiifolia (9 revisions)
- Quercus prinoides (9 revisions)
- Ranunculus jovis (9 revisions)
- Leitneria (9 revisions)
- Rhododendron columbianum (9 revisions)
- Echinocereus arizonicus (9 revisions)
- Polytrichum commune (9 revisions)
- Mirabilis nyctaginea (9 revisions)
- Juniperus virginiana var. virginiana (9 revisions)
- Pilea (9 revisions)
- Abies bracteata (9 revisions)
- Isoëtes (9 revisions)
- Cyrillaceae Illustrations (9 revisions)
- Delphinium parryi subsp. eastwoodiae (9 revisions)
- Selenicereus grandiflorus (9 revisions)
- Abronia ameliae (9 revisions)
- Cheilanthes (9 revisions)
- Notholaena nealleyi (9 revisions)
- Carex cumberlandensis (9 revisions)
- Ranunculus turneri (9 revisions)
- Pinus sylvestris var. sylvestris (9 revisions)
- Herniaria hirsuta (9 revisions)
- Selaginella subg. Tetragonostachys (9 revisions)
- Ephemeraceae Illustrations (9 revisions)
- Morus alba (9 revisions)
- Argemone corymbosa subsp. arenicola (9 revisions)
- Thalictrum mirabile (9 revisions)
- Stenocereus (9 revisions)
- Clematis subg. Viticella (9 revisions)
- Adiantum (9 revisions)
- Hypolepis repens (9 revisions)
- Canbya candida (9 revisions)
- Grammitis nimbata (9 revisions)
- Argyrochosma microphylla (9 revisions)
- Grimmiaceae Illustrations (9 revisions)
- Ranunculus acriformis var. acriformis (9 revisions)
- Pilea pumila (9 revisions)
- Delphinium multiplex (9 revisions)
- Echinomastus warnockii (9 revisions)
- Pisonia (9 revisions)
- Cistanthe umbellata (9 revisions)
- Cryptogramma cascadensis (9 revisions)
- Isoëtes virginica (9 revisions)
- Ranunculus gelidus (9 revisions)
- Pinus monticola (9 revisions)
- Iteaceae Illustrations (9 revisions)
- Phyllanthus abnormis var. abnormis (9 revisions)
- Mentzelia nuda (9 revisions)
- Dicentra formosa subsp. formosa (9 revisions)
- Delphinium novomexicanum (9 revisions)
- Sclerocactus spinosior (9 revisions)
- Aquilegia (9 revisions)
- Sesuvium trianthemoides (9 revisions)
- Pinus lambertiana (9 revisions)
- Pellaea ternifolia subsp. villosa (9 revisions)
- Aristolochia serpentaria (9 revisions)
- Thelypteris patens var. patens (9 revisions)
- Alisma (9 revisions)
- Blechnum spicant (9 revisions)
- Limnanthaceae Illustrations (9 revisions)
- Ranunculus alismifolius var. montanus (9 revisions)
- Delphinium carolinianum subsp. vimineum (9 revisions)
- Betula (9 revisions)
- Pediocactus peeblesianus subsp. peeblesianus (9 revisions)
- Betula lenta (9 revisions)
- Trichostigma octandrum (9 revisions)
- Athyrium filix-femina var. asplenioides (9 revisions)
- Clematis socialis (9 revisions)
- Isoëtes caroliniana (9 revisions)
- Polypodium (9 revisions)
- Moringaceae Illustrations (9 revisions)
- Phemeranthus teretifolius (9 revisions)
- Eriogonum corymbosum var. glutinosum (9 revisions)
- Quercus palustris (9 revisions)
- Ranunculus recurvatus var. recurvatus (9 revisions)
- Quercus polymorpha (9 revisions)
- Cactaceae subfam. Opuntioideae (9 revisions)
- Adiantum aleuticum (9 revisions)
- Tiarella (9 revisions)
- Argemone chisosensis (9 revisions)
- Notholaena (9 revisions)
- Juncus phaeocephalus (9 revisions)
- Cheilanthes leucopoda (9 revisions)
- Osmundaceae Illustrations (9 revisions)
- Piper aduncum (9 revisions)
- Quercus buckleyi (9 revisions)
- Coryphantha robbinsorum (9 revisions)
- Ranunculus inamoenus var. subaffinis (9 revisions)
- Cylindropuntia tunicata (9 revisions)
- Equisetum ×mackaii (9 revisions)
- Chamaecyparis (9 revisions)
- Berberis piperiana (9 revisions)
- Lycopodiella prostrata (9 revisions)
- Podostemaceae Illustrations (9 revisions)
- Ariocarpus (9 revisions)
- Thalictrum sect. Physocarpum (9 revisions)
- Matteuccia struthiopteris var. pensylvanica (9 revisions)
- Asplenium bradleyi (9 revisions)
- Pecluma (9 revisions)
- Aponogetonaceae (9 revisions)
- Ranunculaceae Illustrations (9 revisions)
- Papaver sect. Rhoeadium (9 revisions)
- Ranunculus acriformis var. aestivalis (9 revisions)
- Grusonia pulchella (9 revisions)
- Delphinium distichum (9 revisions)
- Chelone obliqua var. speciosa (9 revisions)
- Neurodium (9 revisions)
- Schisandraceae Illustrations (9 revisions)
- Eriogonum arcuatum (9 revisions)
- Ranunculus arizonicus var. arizonicus (9 revisions)
- Cannabaceae (9 revisions)
- Opuntia aciculata (9 revisions)
- Quercus fusiformis (9 revisions)
- Collinsia greenei (9 revisions)
- Diphasiastrum digitatum (9 revisions)
- Selaginella arenicola subsp. riddellii (9 revisions)
- Delphinium bicolor subsp. bicolor (9 revisions)
- Athyrium filix-femina var. cyclosorum (9 revisions)
- Symplocaceae Illustrations (9 revisions)
- Eutrochium dubium (9 revisions)
- Eriogonum pyrolifolium (9 revisions)
- Asimina triloba (9 revisions)
- Ranunculus auricomus (9 revisions)
- Opuntia littoralis (9 revisions)
- Cheilanthes yavapensis (9 revisions)
- Marsilea mollis (9 revisions)
- Ranunculus subg. Batrachium (9 revisions)
- Myricaceae (9 revisions)
- Oncosiphon (9 revisions)
- Urticaceae Illustrations (9 revisions)
- Amaranthaceae Illustrations (9 revisions)
- Anemone acutiloba (9 revisions)
- Quercus durata var. durata (9 revisions)
- Opuntia pinkavae (9 revisions)
- Delphinium menziesii subsp. menziesii (9 revisions)
- Trichomanes krausii (9 revisions)
- Delphinium bakeri (9 revisions)
- Azollaceae Illustrations (9 revisions)
- Eriogonum zionis (9 revisions)
- Caltha leptosepala (9 revisions)
- Clematis ochroleuca (9 revisions)
- Harrisia aboriginum (9 revisions)
- Delphinium gypsophilum subsp. gypsophilum (9 revisions)
- Dryopteris filix-mas (9 revisions)
- Phlegmariurus dichotomus (9 revisions)
- Anemone narcissiflora var. villosissima (9 revisions)
- Salviniaceae (9 revisions)
- Buxbaumiaceae Illustrations (9 revisions)
- Thalictrum arkansanum (9 revisions)
- Crataegus ×kelloggii (9 revisions)
- Actaea pachypoda (9 revisions)
- Berberis darwinii (9 revisions)
- Romneya (9 revisions)
- Talinum paniculatum (9 revisions)
- Isoëtes acadiensis (9 revisions)
- Dennstaedtiaceae (9 revisions)
- Tradescantia zebrina (9 revisions)
- Chenopodiaceae Illustrations (9 revisions)
- Lorandersonia microcephala (9 revisions)
- Carya tomentosa (9 revisions)
- Argemone munita subsp. munita (9 revisions)
- Adonis aestivalis (9 revisions)
- Echinocereus coccineus (9 revisions)
- Asimina tetramera (9 revisions)
- Mirabilis latifolia (9 revisions)
- Aquilegia chaplinei (9 revisions)
- Rhynchospora colorata (9 revisions)
- Woodwardia virginica (9 revisions)
- Anemia mexicana (9 revisions)
- Daltoniaceae Illustrations (9 revisions)
- Clematis pitcheri var. pitcheri (9 revisions)
- Carya laciniosa (9 revisions)
- Selenicereus spinulosus (9 revisions)
- Pilea microphylla (9 revisions)
- Abronia macrocarpa (9 revisions)
- Woodsia plummerae (9 revisions)
- Astrolepis cochisensis subsp. cochisensis (9 revisions)
- Anemone multifida var. saxicola (9 revisions)
- Pinus contorta var. contorta (9 revisions)
- Eriogonum luteolum (9 revisions)
- Equisetaceae Illustrations (9 revisions)
- Juglans microcarpa (9 revisions)
- Vancouveria (9 revisions)
- Stenocereus thurberi (9 revisions)
- Cocculus carolinus (9 revisions)
- Abronia umbellata var. umbellata (9 revisions)
- Cheilanthes feei (9 revisions)
- Sequoia (9 revisions)
- Delphinium decorum (9 revisions)
- Eriogonum baileyi (9 revisions)
- Juncus arcticus var. alaskanus (9 revisions)
- Picea pungens (9 revisions)
- Grossulariaceae Illustrations (9 revisions)
- Quercus incana (9 revisions)
- Ranunculus canus (9 revisions)
- Ranunculus hispidus var. nitidus (9 revisions)
- Polygonum fowleri subsp. fowleri (9 revisions)
- Pisonia aculeata (9 revisions)
- Trichomanes lineolatum (9 revisions)
- Thalictrum texanum (9 revisions)
- Trichomanes intricatum (9 revisions)
- Juglandaceae Illustrations (9 revisions)
- Quercus velutina (9 revisions)
- Ranunculus subg. Ficaria (9 revisions)
- Sanguinaria (9 revisions)
- Sclerocactus blainei (9 revisions)
- Asimina parviflora (9 revisions)
- Sesuvium portulacastrum (9 revisions)
- Notholaena neglecta (9 revisions)
- Polypodium glycyrrhiza (9 revisions)
- Litsea (9 revisions)
- Dennstaedtia (9 revisions)
- Limnocharitaceae Illustrations (9 revisions)
- Arceuthobium campylopodum subsp. siskiyouense (9 revisions)
- Aquilegia jonesii (9 revisions)
- Cassytha filiformis (9 revisions)
- Pediocactus peeblesianus subsp. fickeiseniae (9 revisions)
- Conicosia (9 revisions)
- Hygrohypnum montanum (9 revisions)
- Cystopteris utahensis (9 revisions)
- Myrica cerifera (9 revisions)
- Woodwardia areolata (9 revisions)
- Vittaria (9 revisions)
- Muntingiaceae Illustrations (9 revisions)
- Phemeranthus thompsonii (9 revisions)
- Berberis canadensis (9 revisions)
- Ranunculus glaberrimus var. glaberrimus (9 revisions)
- Hamatocactus bicolor (9 revisions)
- Aquilegia saximontana (9 revisions)
- Cylindropuntia (9 revisions)
- Quercus grisea (9 revisions)
- Selaginella tortipila (9 revisions)
- Paeoniaceae Illustrations (9 revisions)
- Eriogonum brevicaule (9 revisions)
- Hexastylis virginica (9 revisions)
- Delphinium newtonianum (9 revisions)
- Coryphantha missouriensis (9 revisions)
- Fumaria (9 revisions)
- Cylindropuntia davisii (9 revisions)
- Pseudotsuga menziesii var. glauca (9 revisions)
- Delphinium variegatum subsp. variegatum (9 revisions)
- Pinus engelmannii (9 revisions)
- Astrolepis sinuata subsp. mexicana (9 revisions)
- Polygonaceae Illustrations (9 revisions)
- Aquilegia coerulea var. ochroleuca (9 revisions)
- Anulocaulis (9 revisions)
- Nuphar advena (9 revisions)
- Anemone oregana var. oregana (9 revisions)
- Cylindropuntia acanthocarpa var. acanthocarpa (9 revisions)
- Lithocarpus (9 revisions)
- Grimmiaceae subfam. Grimmioideae (9 revisions)
- Chamaecyparis lawsoniana (9 revisions)
- Delphinium parishii subsp. pallidum (9 revisions)
- Pinus virginiana (9 revisions)
- Resedaceae Illustrations (9 revisions)
- Euphorbia (9 revisions)
- Argemone albiflora subsp. texana (9 revisions)
- Clematis coactilis (9 revisions)
- Hexastylis contracta (9 revisions)
- Opuntia (9 revisions)
- Ulmus americana (9 revisions)
- Chelone obliqua var. erwiniae (9 revisions)
- Asplenium ebenoides (9 revisions)
- Ranunculus canus var. ludovicianus (9 revisions)
- Trichomanes punctatum subsp. floridanum (9 revisions)
- Juncus acuminatus (9 revisions)
- Schistostegaceae Illustrations (9 revisions)
- Calycanthus floridus var. floridus (9 revisions)
- Coptis (9 revisions)
- Ranunculus glaberrimus var. ellipticus (9 revisions)
- Argemone mexicana (9 revisions)
- Iris (sect. Limniris) ser. Tripetalae (9 revisions)
- Collinsia linearis (9 revisions)
- Abies bifolia (9 revisions)
- Pinus strobus (9 revisions)
- Nelumbo (9 revisions)
- Lechea san-sabeana (9 revisions)
- Pinus balfouriana (9 revisions)
- Eriogonum alatum (9 revisions)
- Takakiaceae Illustrations (9 revisions)
- Betula nigra (9 revisions)
- Juglans major var. major (9 revisions)
- Ranunculus sect. Ranunculus (9 revisions)
- Ranunculus aquatilis var. aquatilis (9 revisions)
- Selaginella apoda (9 revisions)
- Woodsia cochisensis (9 revisions)
- Ranunculus macounii (9 revisions)
- Platanus wrightii (9 revisions)
- Drymaria glandulosa (9 revisions)
- Violaceae Illustrations (9 revisions)
- Amblystegiaceae Illustrations (9 revisions)
- Ranunculus fasciculatus (9 revisions)
- Parietaria judaica (9 revisions)
- Urtica dioica subsp. dioica (9 revisions)
- Opuntia fragilis (9 revisions)
- Dicentra cucullaria (9 revisions)
- Marsilea oligospora (9 revisions)
- Cheilanthes alabamensis (9 revisions)
- Ranunculus subg. Pallasiantha (9 revisions)
- Carex incurviformis (9 revisions)
- Bartramiaceae Illustrations (9 revisions)
- Meconella californica (9 revisions)
- Calycanthus occidentalis (9 revisions)
- Ranunculus hispidus var. hispidus (9 revisions)
- Harrisia simpsonii (9 revisions)
- Corydalis pauciflora (9 revisions)
- Pinus aristata (9 revisions)
- Taxodium (9 revisions)
- Papaver macounii subsp. macounii (9 revisions)
- Polystichum lemmonii (9 revisions)
- Cabombaceae Illustrations (9 revisions)
- Ceratophyllum muricatum subsp. australe (9 revisions)
- Argemone munita subsp. robusta (9 revisions)
- Boerhavia linearifolia (9 revisions)
- Delphinium subsect. Exaltata (9 revisions)
- Basellaceae (9 revisions)
- Selaginella (9 revisions)
- Selaginella oregana (9 revisions)
- Braya (9 revisions)
- Celtis reticulata (9 revisions)
- Selaginella bigelovii (9 revisions)
- Thelypteris reptans (9 revisions)
- Cistaceae Illustrations (9 revisions)
- Lorandersonia peirsonii (9 revisions)
- Trautvetteria (9 revisions)
- Juglans nigra (9 revisions)
- Dicentra formosa subsp. oregana (9 revisions)
- Echinocereus viridiflorus (9 revisions)
- Anemone multifida var. tetonensis (9 revisions)
- Polytrichum commune var. perigoniale (9 revisions)
- Mirabilis glabra (9 revisions)
- Allium schoenoprasum (9 revisions)
- Cupressus (9 revisions)
- Clematis lasiantha (9 revisions)
- Lygodium (9 revisions)
- Datiscaceae Illustrations (9 revisions)
- Lindera (9 revisions)
- Chelidonium majus (9 revisions)
- Delphinium patens (9 revisions)
- Selenicereus pteranthus (9 revisions)
- Abronia elliptica (9 revisions)
- Thelypteris subg. Thelypteris (9 revisions)
- Hexastylis shuttleworthii var. harperi (9 revisions)
- Vittaria appalachiana (9 revisions)
- Ericaceae Illustrations (9 revisions)
- Corydalis aurea subsp. occidentalis (9 revisions)
- Menispermaceae (9 revisions)
- Echinocactus (9 revisions)
- Myosurus apetalus var. borealis (9 revisions)
- Abronia umbellata var. acutalata (9 revisions)
- Prosartes maculata (9 revisions)
- Huperzia miyoshiana (9 revisions)
- Ficus americana (9 revisions)
- Selaginella mutica var. mutica (9 revisions)
- Juncus acutiflorus (9 revisions)
- Selaginella wrightii (9 revisions)
- Haemodoraceae Illustrations (9 revisions)
- Quercus oglethorpensis (9 revisions)
- Ranunculus sect. Pseudaphanostemma (9 revisions)
- Aquilegia micrantha (9 revisions)
- Echinomastus intertextus var. intertextus (9 revisions)
- Polygonum fowleri subsp. hudsonianum (9 revisions)
- Caulophyllum (9 revisions)
- Pisonia capitata (9 revisions)
- Deparia acrostichoides (9 revisions)
- Pinus contorta var. murrayana (9 revisions)
- Ulmus pumila (9 revisions)
- Callirhoë (9 revisions)
- Torreya taxifolia (9 revisions)
- Pseudotsuga menziesii var. menziesii (9 revisions)
- Juncaceae Illustrations (9 revisions)
- Eriogonum subg. Oligogonum (9 revisions)
- Ranunculus hydrocharoides (9 revisions)
- Quercus laceyi (9 revisions)
- Delphinium hesperium subsp. pallescens (9 revisions)
- Sclerocactus sileri (9 revisions)
- Sesuvium verrucosum (9 revisions)
- Hypnum recurvatum (9 revisions)
- Marsilea ancylopoda (9 revisions)
- Pellaea lyngholmii (9 revisions)
- Botrychium acuminatum (9 revisions)
- Lycopodiaceae Illustrations (9 revisions)
- Fothergilla (9 revisions)
- Delphinium hansenii subsp. ewanianum (9 revisions)
- Ranunculus arvensis (9 revisions)
- Pediocactus bradyi (9 revisions)
- Hexastylis naniflora (9 revisions)
- Conicosia pugioniformis (9 revisions)
- Diphasiastrum (9 revisions)
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- Schoenoplectus acutus var. acutus (9 revisions)
- Cheilanthes intertexta (9 revisions)
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- Phemeranthus validulus (9 revisions)
- Delphinium subsect. Depauperata (9 revisions)
- Aristolochiaceae (9 revisions)
- Coryphantha (9 revisions)
- Magnolia virginiana (9 revisions)
- Cylindropuntia leptocaulis (9 revisions)
- Ophioglossum (9 revisions)
- Abies magnifica (9 revisions)
- Nymphaea odorata subsp. tuberosa (9 revisions)
- Carex subspathacea (9 revisions)
- Pinus clausa (9 revisions)
- Papaveraceae Illustrations (9 revisions)
- Eriogonum heracleoides (9 revisions)
- Platanaceae (9 revisions)
- Ranunculus sect. Arcteranthis (9 revisions)
- Coryphantha minima (9 revisions)
- Achatocarpaceae (9 revisions)
- Tectaria coriandrifolia (9 revisions)
- Asplenium ×curtissii (9 revisions)
- Ficus pumila (9 revisions)
- Blechnum occidentale var. minor (9 revisions)
- Polypodiaceae Illustrations (9 revisions)
- Spergularia canadensis var. canadensis (9 revisions)
- Maclura pomifera (9 revisions)
- Ariocarpus fissuratus (9 revisions)
- Juglans californica (9 revisions)
- Cylindropuntia acanthocarpa var. thornberi (9 revisions)
- Clematis pauciflora (9 revisions)
- Pinus ponderosa var. scopulorum (9 revisions)
- Huperzia lucidula (9 revisions)
- Ranunculus trilobus (9 revisions)
- Pteridium (9 revisions)
- Carex scirpoidea subsp. scirpoidea (9 revisions)
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- Erigeron uniflorus var. eriocephalus (9 revisions)
- Quercus gambelii (9 revisions)
- Opuntia pusilla (9 revisions)
- Berberis nevinii (9 revisions)
- Chionophila (9 revisions)
- Cupressus bakeri (9 revisions)
- Weissia (9 revisions)
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- Carex saxatilis (9 revisions)
- Clematis virginiana (9 revisions)
- Cheilanthes viscida (9 revisions)
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- Umbellularia (9 revisions)
- Delphinium parryi subsp. purpureum (9 revisions)
- Chelidonium (9 revisions)
- Opuntia engelmannii var. engelmannii (9 revisions)
- Xanthorhiza (9 revisions)
- Collinsia rattanii (9 revisions)
- Trichomanes petersii (9 revisions)
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- Argyrochosma (9 revisions)
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- Canella winterana (9 revisions)
- Quercus hinckleyi (9 revisions)
- Opuntia ×occidentalis (9 revisions)
- Delphinium scopulorum (9 revisions)
- Abies lowiana (9 revisions)
- Pteridium aquilinum var. latiusculum (9 revisions)
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- Opuntia ×columbiana (9 revisions)
- Corylus americana (9 revisions)
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- Corydalis micrantha subsp. micrantha (9 revisions)
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- Quercus pungens (9 revisions)
- Spergularia platensis (9 revisions)
- Hexastylis minor (9 revisions)
- Clematis subg. Clematis (9 revisions)
- Harrisia fragrans (9 revisions)
- Anemone edwardsiana var. edwardsiana (9 revisions)
- Anemia wrightii (9 revisions)
- Cakile edentula var. edentula (9 revisions)
- Pilea trianthemoides (9 revisions)
- Selaginella densa (9 revisions)
- Cactaceae Illustrations (9 revisions)
- Thalictrum minus (9 revisions)
- Peperomia humilis (9 revisions)
- Echinocereus stramineus var. stramineus (9 revisions)
- Cimicifuga rubifolia (9 revisions)
- Anredera (9 revisions)
- Dicranopteris flexuosa (9 revisions)
- Aristolochia (9 revisions)
- Cheilanthes arizonica (9 revisions)
- Marsileaceae (9 revisions)
- Cleomaceae Illustrations (9 revisions)
- Lorandersonia pulchella (9 revisions)
- Aristolochia pentandra (9 revisions)
- Thalictrum sect. Anemonella (9 revisions)
- Delphinium californicum subsp. californicum (9 revisions)
- Echinocereus davisii (9 revisions)
- Corydalis micrantha subsp. texensis (9 revisions)
- Mirabilis austrotexana (9 revisions)
- Notholaena aliena (9 revisions)
- Sinapis alba (9 revisions)
- Delphinium patens subsp. patens (9 revisions)
- Botrychium paradoxum (9 revisions)
- Dennstaedtiaceae Illustrations (9 revisions)
- Asarum wagneri (9 revisions)
- Boerhavia triquetra (9 revisions)
- Ranunculus harveyi var. harveyi (9 revisions)
- Abronia bolackii (9 revisions)
- Larix (9 revisions)
- Cystopteris tennesseensis (9 revisions)
- Juglans (9 revisions)
- Abies (9 revisions)
- Juncus hemiendytus var. hemiendytus (9 revisions)
- Juncus triformis (9 revisions)
- Eriocaulaceae Illustrations (9 revisions)
- Echinocactus horizonthalonius (9 revisions)
- Quercus alba (9 revisions)
- Abronia umbellata var. breviflora (9 revisions)
- Pteridium aquilinum var. pubescens (9 revisions)
- Ranunculus sect. Echinella (9 revisions)
- Abies procera (9 revisions)
- Hamamelidaceae Illustrations (9 revisions)
- Aristolochia macrophylla (9 revisions)
- Polygonaceae (9 revisions)
- Nectandra (9 revisions)
- Deeringothamnus pulchellus (9 revisions)
- Boerhavia wrightii (9 revisions)
- Pisonia rotundata (9 revisions)
- Dysphania subsect. Botrys (9 revisions)
- Cheilanthes parryi (9 revisions)
- Notholaena copelandii (9 revisions)
- Humulus lupulus var. lupulus (9 revisions)
- Callirhoë digitata (9 revisions)
- Asplenium dalhousiae (9 revisions)
- Juncaginaceae Illustrations (9 revisions)
- Thalictrum occidentale (9 revisions)
- Clematis glaucophylla (9 revisions)
- Sclerocactus polyancistrus (9 revisions)
- Delphinium gypsophilum (9 revisions)
- Cypselea (9 revisions)
- Tectaria fimbriata (9 revisions)
- Asplenium (9 revisions)
- Aquilegia formosa var. truncata (9 revisions)
- Pinus leiophylla var. chihuahuana (9 revisions)
- Taxus (9 revisions)
- Lygodiaceae Illustrations (9 revisions)
- Delphinium alpestre (9 revisions)
- Ranunculus ranunculinus (9 revisions)
- Saururus (9 revisions)
- Pediocactus paradinei (9 revisions)
- Schisandra (9 revisions)
- Malephora (9 revisions)
- Tsuga caroliniana (9 revisions)
- Peperomia glabella (9 revisions)
- Myricaceae Illustrations (9 revisions)
- Mirabilis linearis var. linearis (9 revisions)
- Quercus inopina (9 revisions)
- Lardizabalaceae (9 revisions)
- Coryphantha macromeris (9 revisions)
- Piperaceae (9 revisions)
- Cylindropuntia arbuscula (9 revisions)
- Agave americana (9 revisions)
- Adiantum tricholepis (9 revisions)
- Clematis occidentalis var. occidentalis (9 revisions)
- Cheilanthes lindheimeri (9 revisions)
- Parkeriaceae Illustrations (9 revisions)
- Asimina (9 revisions)
- Quercus oblongifolia (9 revisions)
- Coryphantha hesteri (9 revisions)
- Hexastylis speciosa (9 revisions)
- Cylindropuntia whipplei (9 revisions)
- Donrichardsia macroneuron (9 revisions)
- Woodsia scopulina subsp. laurentiana (9 revisions)
- Adonis annua (9 revisions)
- Grammitis (9 revisions)
- Juncus supiniformis (9 revisions)
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- Nuphar microphylla (9 revisions)
- Ariocarpus fissuratus var. fissuratus (9 revisions)
- Delphinium cardinale (9 revisions)
- Argemone (9 revisions)
- Cylindropuntia acanthocarpa var. coloradensis (9 revisions)
- Aristolochia tomentosa (9 revisions)
- Ptychostomum pseudotriquetrum (9 revisions)
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- Cheilanthes pringlei (9 revisions)
- Delphinium variegatum (9 revisions)
- Botrychium montanum (9 revisions)
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- Eriogonum prociduum (9 revisions)
- Myrica pensylvanica (9 revisions)
- Clematis pitcheri var. dictyota (9 revisions)
- Nyctaginaceae (9 revisions)
- Cinnamomum camphora (9 revisions)
- Kickxia spuria (9 revisions)
- Chionophila jamesii (9 revisions)
- Pellaea brachyptera (9 revisions)
- Pellaea gastonyi (9 revisions)
- Myrica (9 revisions)
- Cyrtomium falcatum (9 revisions)
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- Delphinium menziesii subsp. pallidum (9 revisions)
- Rumex (9 revisions)
- Papaver macounii subsp. discolor (9 revisions)
- Nymphaea elegans (9 revisions)
- Opuntia engelmannii var. linguiformis (9 revisions)
- Delphinium parishii subsp. subglobosum (9 revisions)
- Cyrtomium (9 revisions)
- Delphinium hutchinsoniae (9 revisions)
- Pteris (9 revisions)
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- Solidago lepida subsp. lepida (9 revisions)
- Ranunculus glacialis var. camissonis (9 revisions)
- Anemone multifida var. stylosa (9 revisions)
- Eschscholzia ramosa (9 revisions)
- Opuntia microdasys (9 revisions)
- Akebia quinata (9 revisions)
- Collinsia heterophylla (9 revisions)
- Thelypteris reticulata (9 revisions)
- Blechnum serrulatum (9 revisions)
- Ranunculus bonariensis var. trisepalus (9 revisions)
- Xyridaceae Illustrations (9 revisions)
- Andreaeobryaceae Illustrations (9 revisions)
- Argemone polyanthemos (9 revisions)
- Betula murrayana (9 revisions)
- Hamamelidaceae (9 revisions)
- Quercus myrtifolia (9 revisions)
- Hymenophyllaceae (9 revisions)
- Cupressus guadalupensis var. forbesii (9 revisions)
- Argemone arizonica (9 revisions)
- Bataceae Illustrations (9 revisions)
- Ranunculus ficaria (9 revisions)
- Crataegus (sect. Unassigned) ser. Montaninsulae (9 revisions)
- Ranunculus eschscholtzii var. eximius (9 revisions)
- Papaver sect. Papaver (9 revisions)
- Isoëtes butleri (9 revisions)
- Cakile edentula var. lacustris (9 revisions)
- Tradescantia reverchonii (9 revisions)
- Calliergonaceae Illustrations (9 revisions)
- Anemone piperi (9 revisions)
- Crataegus ×latebrosa (9 revisions)
- Berberis nervosa (9 revisions)
- Dicranum fuscescens (9 revisions)
- Echinocereus papillosus (9 revisions)
- Peperomia obtusifolia (9 revisions)
- Mirabilis linearis var. subhispida (9 revisions)
- Thelypteris grandis var. grandis (9 revisions)
- Juniperus pinchotii (9 revisions)
- Argemone sanguinea (9 revisions)
- Isoëtes tuckermanii (9 revisions)
- Eriogonum pharnaceoides (9 revisions)
- Clethraceae Illustrations (9 revisions)
- Lorandersonia salicina (9 revisions)
- Eriogonum nudum (9 revisions)
- Quercus montana (9 revisions)
- Ranunculus alismifolius var. lemmonii (9 revisions)
- Carpinus caroliniana subsp. virginiana (9 revisions)
- Echinocereus berlandieri (9 revisions)
- Thalictrum clavatum (9 revisions)
- Phytolacca bogotensis (9 revisions)
- Heterocladium procurrens (9 revisions)
- Calopogon barbatus (9 revisions)
- Vittaria graminifolia (9 revisions)
- Argemone corymbosa subsp. corymbosa (9 revisions)
- Polypodium amorphum (9 revisions)
- Trichomanes membranaceum (9 revisions)
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- Nuphar orbiculata (9 revisions)
- Stylophorum diphyllum (9 revisions)
- Epiphyllum (9 revisions)
- Illicium (9 revisions)
- Abronia argillosa (9 revisions)
- Asplenium montanum (9 revisions)
- Pinus ponderosa var. arizonica (9 revisions)
- Morus microphylla (9 revisions)
- Dryopteridaceae (9 revisions)
- Eleocharis radicans (9 revisions)
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- Eriogonum ovalifolium (9 revisions)
- Ranunculus macauleyi (9 revisions)
- Chrysolepis sempervirens (9 revisions)
- Abronia latifolia (9 revisions)
- Atriplex cordulata var. erecticaulis (9 revisions)
- Selaginella pilifera (9 revisions)
- Chamaecyparis thyoides (9 revisions)
- Illicium parviflorum (9 revisions)
- Thelypteris subg. Parathelypteris (9 revisions)
- Selaginella eclipes (9 revisions)
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- Anemone multiceps (9 revisions)
- Echinomastus intertextus var. dasyacanthus (9 revisions)
- Broussonetia papyrifera (9 revisions)
- Guapira (9 revisions)
- Ephedra cutleri (9 revisions)
- Umbellularia californica var. fresnensis (9 revisions)
- Asplenium scolopendrium var. americanum (9 revisions)
- Bommeria (9 revisions)
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- Ranunculus alismifolius var. alismellus (9 revisions)
- Podophyllum peltatum (9 revisions)
- Ranunculus orthorhynchus var. bloomeri (9 revisions)
- Sclerocactus nyensis (9 revisions)
- Magnolia fraseri (9 revisions)
- Cypselea humifusa (9 revisions)
- Juniperus coahuilensis (9 revisions)
- Lycopodium (9 revisions)
- Humulus (9 revisions)
- Pilularia americana (9 revisions)
- Arisaema triphyllum (9 revisions)
- Pinus rigida (9 revisions)
- Coreopsis tinctoria (9 revisions)
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- Deeringothamnus (9 revisions)
- Petiveria (9 revisions)
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- Pentagramma triangularis subsp. triangularis (9 revisions)
- Anemone cylindrica (9 revisions)
- Botrychium boreale (9 revisions)
- Juncus xiphioides (9 revisions)
- Cheilanthes clevelandii (9 revisions)
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- Portulaca (9 revisions)
- Quercus havardii (9 revisions)
- Diphylleia (9 revisions)
- Coryphantha nickelsiae (9 revisions)
- Caulophyllum thalictroides (9 revisions)
- Cylindropuntia ×tetracantha (9 revisions)
- Thelypteris puberula var. sonorensis (9 revisions)
- Pinus quadrifolia (9 revisions)
- Argemone aenea (9 revisions)
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- Nymphaeaceae (9 revisions)
- Cylindropuntia spinosior (9 revisions)
- Agave parryi var. parryi (9 revisions)
- Ctenitis (9 revisions)
- Thelypteris kunthii (9 revisions)
- Cissampelos pareira (9 revisions)
- Selaginella cinerascens (9 revisions)
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- Solidago uliginosa (9 revisions)
- Delphinium subsect. Echinata (9 revisions)
- Lophophora (9 revisions)
- Platystemon californicus (9 revisions)
- Quercus chihuahuensis (9 revisions)
- Cylindropuntia acanthocarpa var. major (9 revisions)
- Hippuris (9 revisions)
- Pinus monophylla (9 revisions)
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- Eschscholzia minutiflora (9 revisions)
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- Erigeron humilis (9 revisions)
- Berberidaceae (9 revisions)
- Parietaria floridana (9 revisions)
- Clematis orientalis (9 revisions)
- Opuntia triacantha (9 revisions)
- Delphinium subsect. Grumosa (9 revisions)
- Asplenium plenum (9 revisions)
- Ceratophyllum (9 revisions)
- Juncus bolanderi (9 revisions)
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- Enemion biternatum (9 revisions)
- Hamamelis (9 revisions)
- Xanthorhiza simplicissima (9 revisions)
- Opuntia engelmannii var. lindheimeri (9 revisions)
- Collinsia sparsiflora var. sparsiflora (9 revisions)
- Selaginella watsonii (9 revisions)
- Cheilanthes kaulfussii (9 revisions)
- Anemone tuberosa (9 revisions)
- Carex chordorrhiza (9 revisions)
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- Solidago lepida var. lepida (9 revisions)
- Eriogonum lachnogynum (9 revisions)
- Clematis tangutica var. tangutica (9 revisions)
- Argemone pleiacantha subsp. ambigua (9 revisions)
- Hesperomecon linearis (9 revisions)
- Boerhavia coccinea (9 revisions)
- Eschscholzia lobbii (9 revisions)
- Cryptogramma acrostichoides (9 revisions)
- Corydalis aqua-gelidae (9 revisions)
- Zamiaceae Illustrations (9 revisions)
- Anemiaceae Illustrations (9 revisions)
- Eriogonum kennedyi (9 revisions)
- Aconitum delphiniifolium (9 revisions)
- Quercus muehlenbergii (9 revisions)
- Calycanthus floridus var. glaucus (9 revisions)
- Opuntia polyacantha var. polyacantha (9 revisions)
- Ranunculus macranthus (9 revisions)
- Iris (sect. Limniris) ser. Spuriae (9 revisions)
- Ctenitis submarginalis (9 revisions)
- Ephedra fasciculata (9 revisions)
- Aquilegia longissima (9 revisions)
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- Dicentra ochroleuca (9 revisions)
- Ranunculus sect. Flammula (9 revisions)
- Ranunculus cardiophyllus (9 revisions)
- Acanthocereus tetragonus (9 revisions)
- Thalictrum sect. Thalictrum (9 revisions)
- Portulaca pilosa (9 revisions)
- Pseudotsuga (9 revisions)
- Quercus garryana var. garryana (9 revisions)
- Ginkgoaceae (9 revisions)
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- Laënnecia filaginoides (9 revisions)
- Liquidambar (9 revisions)
- Quercus emoryi (9 revisions)
- Echinocereus pectinatus (9 revisions)
- Piper (9 revisions)
- Anredera cordifolia (9 revisions)
- Onoclea (9 revisions)
- Pinus taeda (9 revisions)
- Micranthes oregana (9 revisions)
- Clematis columbiana var. tenuiloba (9 revisions)
- Pinus coulteri (9 revisions)
- Schizaea pusilla (9 revisions)
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- Quercus robusta (9 revisions)
- Eschscholzia rhombipetala (9 revisions)
- Clematis albicoma (9 revisions)
- Echinocereus pentalophus (9 revisions)
- Thalictrum sparsiflorum (9 revisions)
- Mirabilis texensis (9 revisions)
- Sansevieria hyacinthoides (9 revisions)
- Atriplex saccaria var. asterocarpa (9 revisions)
- Isoëtes orcuttii (9 revisions)
- Quercus turbinella (9 revisions)
- Botrychium hesperium (9 revisions)
- Pinus sylvestris (9 revisions)
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- Anemone drummondii var. drummondii (9 revisions)
- Betula kenaica (9 revisions)
- Ficus microcarpa (9 revisions)
- Pedicularis oederi (9 revisions)
- Abronia carletonii (9 revisions)
- Calocedrus decurrens (9 revisions)
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- Laënnecia coulteri (9 revisions)
- Parietaria pensylvanica (9 revisions)
- Echinocactus polycephalus var. polycephalus (9 revisions)
- Ranunculus subg. Crymodes (9 revisions)
- Phytolacca octandra (9 revisions)
- Phanerophlebia (9 revisions)
- Cupressus macrocarpa (9 revisions)
- Thalictrum dioicum (9 revisions)
- Equisetum subg. Hippochaete (9 revisions)
- Huperzia occidentalis (9 revisions)
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- Quercus minima (9 revisions)
- Lindera melissifolia (9 revisions)
- Delphinium sapellonis (9 revisions)
- Thalictrum dasycarpum (9 revisions)
- Guapira discolor (9 revisions)
- Dysphania subsect. Incisa (9 revisions)
- Woodwardia (9 revisions)
- Juniperus virginiana var. silicicola (9 revisions)
- Ranunculus californicus var. cuneatus (9 revisions)
- Huperzia (9 revisions)
- Pellaea ternifolia subsp. arizonica (9 revisions)
- Lardizabalaceae Illustrations (9 revisions)
- Argemone albiflora subsp. albiflora (9 revisions)
- Minuartia biflora (9 revisions)
- Aquilegia chrysantha (9 revisions)
- Delphinium polycladon (9 revisions)
- Sclerocactus papyracanthus (9 revisions)
- Ficus religiosa (9 revisions)
- Trichostigma (9 revisions)
- Dryopteris cristata (9 revisions)
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- Liquidambar styraciflua (9 revisions)
- Nephrolepis multiflora (9 revisions)
- Ophioglossum engelmannii (9 revisions)
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- Delphinium trolliifolium (9 revisions)
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- Boerhavia torreyana (9 revisions)
- Quercus pagoda (9 revisions)
- Delosperma (9 revisions)
- Cupressus arizonica (9 revisions)
- Pityrogramma calomelanos var. calomelanos (9 revisions)
- Carex fuliginosa (9 revisions)
- Peperomia pellucida (9 revisions)
- Polypodium californicum (9 revisions)
- Myrsinaceae Illustrations (9 revisions)
- Portulaca amilis (9 revisions)
- Aquilegia pubescens (9 revisions)
- Menispermum (9 revisions)
- Coryphantha ramillosa (9 revisions)
- Juglans hindsii (9 revisions)
- Cylindropuntia kleiniae (9 revisions)
- Pinus (9 revisions)
- Delphinium parryi subsp. maritimum (9 revisions)
- Pentagramma triangularis (9 revisions)
- Thelypteris noveboracensis (9 revisions)
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- Arida blepharophylla (9 revisions)
- Eriogonum compositum (9 revisions)
- Quercus shumardii (9 revisions)
- Coryphantha alversonii (9 revisions)
- Agave parryi var. huachucensis (9 revisions)
- Asplenium ruta-muraria (9 revisions)
- Pteris cretica var. albolineata (9 revisions)
- Thalictrum venulosum (9 revisions)
- Pinus washoensis (9 revisions)
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- Peperomia amplexicaulis (9 revisions)
- Lophophora williamsii (9 revisions)
- Nelumbo nucifera (9 revisions)
- Lithocarpus densiflorus var. densiflorus (9 revisions)
- Fissidens closteri (9 revisions)
- Cylindropuntia wolfii (9 revisions)
- Chenopodium subsect. Chenopodium (9 revisions)
- Hippuris montana (9 revisions)
- Juniperus flaccida var. flaccida (9 revisions)
- Salix ×smithiana (9 revisions)
- Papaver hybridum (9 revisions)
- Pentagramma triangularis subsp. viscosa (9 revisions)
- Roellobryaceae Illustrations (9 revisions)
- Saururus cernuus (9 revisions)
- Aquilegia coerulea var. alpina (9 revisions)
- Opuntia cubensis (9 revisions)
- Ranunculus sceleratus var. sceleratus (9 revisions)
- Chionophila tweedyi (9 revisions)
- Argyrochosma limitanea subsp. mexicana (9 revisions)
- Aconitum columbianum subsp. viviparum (9 revisions)
- Dennstaedtia punctilobula (9 revisions)
- Seligeriaceae Illustrations (9 revisions)
- Annonaceae (9 revisions)
- Castanea dentata (9 revisions)
- Opuntia engelmannii var. flavispina (9 revisions)
- Nigella damascena (9 revisions)
- Collinsia sparsiflora var. collina (9 revisions)
- Selaginella underwoodii (9 revisions)
- Cheilanthes newberryi (9 revisions)
- Morus rubra (9 revisions)
- Theaceae Illustrations (9 revisions)
- Solidago lepida var. salebrosa (9 revisions)
- Clematis occidentalis var. dissecta (9 revisions)
- Cannabis sativa (9 revisions)
- Opuntia rufida (9 revisions)
- Iris (sect. Limniris) ser. Longipetalae (9 revisions)
- Nephrolepis exaltata (9 revisions)
- Gleicheniaceae (9 revisions)
- Delphinium californicum (9 revisions)
- Delphinium luteum (9 revisions)
- Zannichelliaceae Illustrations (9 revisions)
- Annonaceae Illustrations (9 revisions)
- Delphinium sutherlandii (9 revisions)
- Berberis fremontii (9 revisions)
- Brosimum alicastrum (9 revisions)
- Opuntia polyacantha var. arenaria (9 revisions)
- Ranunculus subg. Oxygraphis (9 revisions)
- Atriplex sect. Atriplex (9 revisions)
- Astrolepis cochisensis subsp. arizonica (9 revisions)
- Berberidaceae Illustrations (9 revisions)
- Papaver mcconnellii (9 revisions)
- Ranunculus laxicaulis (9 revisions)
- Agdestis clematidea (9 revisions)
- Asarum lemmonii (9 revisions)
- Grimmia ramondii (9 revisions)
- Portulaca rubricaulis (9 revisions)
- Arachniodes (9 revisions)
- Pinus flexilis (9 revisions)
- Anemone lyallii (9 revisions)
- Schizaea (9 revisions)
- Eriogonum nutans (9 revisions)
- Calycanthaceae Illustrations (9 revisions)
- Eriogonum heermannii (9 revisions)
- Quercus viminea (9 revisions)
- Crataegus ×lucorum (9 revisions)
- Stylomecon heterophylla (9 revisions)
- Nandina (9 revisions)
- Echinocereus pectinatus var. wenigeri (9 revisions)
- Quercus vaseyana (9 revisions)
- Anredera vesicaria (9 revisions)
- Pecluma ptilodon var. caespitosa (9 revisions)
- Ranunculus pacificus (9 revisions)
- Athyrium filix-femina var. californicum (9 revisions)
- Xyris fimbriata (9 revisions)
- Selaginella utahensis (9 revisions)
- Clusiaceae Illustrations (9 revisions)
- Malpighiaceae (9 revisions)
- Thalictrum macrostylum (9 revisions)
- Hexastylis rhombiformis (9 revisions)
- Hexastylis shuttleworthii var. shuttleworthii (9 revisions)
- Echinocereus chisosensis (9 revisions)
- Ranunculus sect. Halodes (9 revisions)
- Nyctaginia (9 revisions)
- Microgramma heterophylla (9 revisions)
- Cucurbita melopepo var. melopepo (9 revisions)
- Sassafras (9 revisions)
- Actinostachys pennula (9 revisions)
- Pteris multifida (9 revisions)
- Dioscoreaceae Illustrations (9 revisions)
- Anemone grayi (9 revisions)
- Delphinium lineapetalum (9 revisions)
- Delphinium decorum subsp. decorum (9 revisions)
- Epiphyllum phyllanthus var. hookeri (9 revisions)
- Abronia maritima (9 revisions)
- Odontosoria clavata (9 revisions)
- Pinus serotina (9 revisions)
- Ranunculus sect. Epirotes (9 revisions)
- Gymnocarpium disjunctum (9 revisions)
- Asplenium rhizophyllum (9 revisions)
- Prenanthes serpentaria (9 revisions)
- Fagaceae Illustrations (9 revisions)
- Casuarinaceae (9 revisions)
- Trema micrantha (9 revisions)
- Ulmus procera (9 revisions)
- Trematodon (9 revisions)
- Echinocactus polycephalus var. xeranthemoides (9 revisions)
- Ficus benghalensis (9 revisions)
- Cheiroglossa palmata (9 revisions)
- Acrostichum danaeifolium (9 revisions)
- Asarum caudatum (9 revisions)
- Pentagramma (9 revisions)
- Hookeriaceae Illustrations (9 revisions)
- Eriogonum multiflorum (9 revisions)
- Aristolochia watsonii (9 revisions)
- Eriogonum subg. Eucycla (9 revisions)
- Argemone squarrosa subsp. glabrata (9 revisions)
- Quercus michauxii (9 revisions)
- Sclerocactus whipplei (9 revisions)
- Ranunculus cooleyae (9 revisions)
- Guapira obtusata (9 revisions)
- Juniperus sect. Juniperus (9 revisions)
- Delphinium subsect. Elata (9 revisions)
- Actinostachys (9 revisions)
- Astrolepis integerrima (9 revisions)
- Lauraceae Illustrations (9 revisions)
- Akebia (9 revisions)
- Anemone oregana var. felix (9 revisions)
- Eschscholzia parishii (9 revisions)
- Glandulicactus (9 revisions)
- Delphinium geraniifolium (9 revisions)
- Trianthema (9 revisions)
- Actaea (9 revisions)
- Isoëtes boomii (9 revisions)
- Juncus oxymeris (9 revisions)
- Polystichum munitum (9 revisions)
- Marantaceae Illustrations (9 revisions)
- Phytolaccaceae (9 revisions)
- Nymphaea leibergii (9 revisions)
- Aristolochia erecta (9 revisions)
- Pediocactus nigrispinus (9 revisions)
- Delphinium exaltatum (9 revisions)
- Delosperma litorale (9 revisions)
- Ephedra viridis (9 revisions)
- Canella (9 revisions)
- Najadaceae Illustrations (9 revisions)
- Portulaca biloba (9 revisions)
- Anemone americana (9 revisions)
- Coryphantha recurvata (9 revisions)
- Peperomia magnoliifolia (9 revisions)
- Agdestis (9 revisions)
- Agave americana subsp. americana (9 revisions)
- Adiantum jordanii (9 revisions)
- Juniperus (9 revisions)
- Botrychium gallicomontanum (9 revisions)
- Adiantum capillus-veneris (9 revisions)
- Phytolaccaceae Illustrations (9 revisions)
- Ostrya chisosensis (9 revisions)
- Boerhavia coulteri var. palmeri (9 revisions)
- Cannabis (9 revisions)
- Cylindropuntia imbricata var. imbricata (9 revisions)
- Agave parryi var. couesii (9 revisions)
- Callitriche brutia var. hamulata (9 revisions)
- Huperzia porophila (9 revisions)
- Trichostomum tenuirostre (9 revisions)
- Selaginella kraussiana (9 revisions)
- Delphinium carolinianum subsp. calciphilum (9 revisions)
- Thuja (9 revisions)
- Lysichiton americanus (9 revisions)
- Potamogetonaceae Illustrations (9 revisions)
- Ferocactus (9 revisions)
- Quercus toumeyi (9 revisions)
- Asimina reticulata (9 revisions)
- Cylindropuntia ramosissima (9 revisions)
- Ephedra antisyphilitica (9 revisions)
- Juniperus occidentalis var. occidentalis (9 revisions)
- Salix humboldtiana (9 revisions)
- Liriodendron (9 revisions)
- Adiantum melanoleucum (9 revisions)
- Rosaceae Illustrations (9 revisions)
- Eriogonum marifolium (9 revisions)
- Vancouveria planipetala (9 revisions)
- Ficus carica (9 revisions)
- Dorstenia contrajerva (9 revisions)
- Helleborus (9 revisions)
- Collinsia (9 revisions)
- Aspidotis (9 revisions)
- Asplenium palmeri (9 revisions)
- Asplenium pumilum (9 revisions)
- Sematophyllaceae Illustrations (9 revisions)
- Ranunculaceae (9 revisions)
- Aquilegia canadensis (9 revisions)
- Opuntia engelmannii var. flexispina (9 revisions)
- Argemone ochroleuca (9 revisions)
- Grimmia (9 revisions)
- Iris (sect. Limniris) ser. Sibirica (9 revisions)
- Notholaena grayi subsp. sonorensis (9 revisions)
- Gyroweisia (9 revisions)
- Cheilanthes bonariensis (9 revisions)
- Corydalis caseana subsp. brandegei (9 revisions)
- Pinus ponderosa var. ponderosa (9 revisions)
- Theliaceae Illustrations (9 revisions)
- Solidago lepida subsp. fallax (9 revisions)
- Dicentra pauciflora (9 revisions)
- Nymphaea (9 revisions)
- Opuntia ficus-indica (9 revisions)
- Aquilegia brevistyla (9 revisions)
- Acrostichum (9 revisions)
- Woodwardia fimbriata (9 revisions)
- Delphinium gracilentum (9 revisions)
- Aristolochia clematitis (9 revisions)
- Zingiberaceae Illustrations (9 revisions)
- Anomodontaceae Illustrations (9 revisions)
- Spiraea ×vanhouttei (9 revisions)
- Celtis lindheimeri (9 revisions)
- Quercus falcata (9 revisions)
- Delphinium nuttallianum (9 revisions)
- Dicranella subulata (9 revisions)
- Opuntia polyacantha var. nicholii (9 revisions)
- Fagus (9 revisions)
- Iris (sect. Limniris) ser. Prisimaticae (9 revisions)
- Pecluma dispersa (9 revisions)
- Pellaea glabella subsp. missouriensis (9 revisions)
- Betulaceae Illustrations (9 revisions)
- Erigeron strigosus var. septentrionalis (9 revisions)
- Adonis (9 revisions)
- Clematis (9 revisions)
- Boerhavia ciliata (9 revisions)
- Clematis addisonii (9 revisions)
- Portulaca smallii (9 revisions)
- Polypodium appalachianum (9 revisions)
- Trichomanes boschianum (9 revisions)
- Enemion hallii (9 revisions)
- Pellaea glabella subsp. simplex (9 revisions)
- Calymperaceae Illustrations (9 revisions)
- Persea borbonia (9 revisions)
- Delphinium stachydeum (9 revisions)
- Delphinium carolinianum subsp. carolinianum (9 revisions)
- Echinocereus dasyacanthus (9 revisions)
- Quercus cornelius-mulleri (9 revisions)
- Molluginaceae (9 revisions)
- Osmunda (9 revisions)
- Braya glabella subsp. prostrata (9 revisions)
- Cheilanthes lendigera (9 revisions)
- Eriogonum spergulinum (9 revisions)
- Campyloneurum latum (9 revisions)
- Mycelis (9 revisions)
- Cochlospermaceae Illustrations (9 revisions)
- Sorbus subg. Sorbus (9 revisions)
- Chrysolepis chrysophylla var. chrysophylla (9 revisions)
- Hydrastis (9 revisions)
- Echinocereus reichenbachii (9 revisions)
- Meconella oregana (9 revisions)
- Nyctaginia capitata (9 revisions)
- Mammillaria wrightii var. wilcoxii (9 revisions)
- Atriplex subsect. Argenteae (9 revisions)
- Pellaea atropurpurea (9 revisions)
- Cucurbita melopepo subsp. texana (9 revisions)
- Myosurus apetalus var. montanus (9 revisions)
- Neurodium lanceolatum (9 revisions)
- Thelypteris sclerophylla (9 revisions)
- Diphysciaceae Illustrations (9 revisions)
- Laënnecia schiedeana (9 revisions)
- Delphinium hansenii (9 revisions)
- Casuarina equisetifolia subsp. equisetifolia (9 revisions)
- Carya aquatica (9 revisions)
- Pilosocereus (9 revisions)
- Clematis texensis (9 revisions)
- Niphotrichum pygmaeum (9 revisions)
- Abronia mellifera (9 revisions)
- Phlebodium (9 revisions)
- Asplenium septentrionale (9 revisions)
- Quercus arkansana (9 revisions)
- Botrychium pedunculosum (9 revisions)
- Hypolepis (9 revisions)
- Fissidentaceae Illustrations (9 revisions)
- Delphinium andesicola (9 revisions)
- Berberis dictyota (9 revisions)
- Thalictrum debile (9 revisions)
- Echinocactus texensis (9 revisions)
- Aristolochia maxima (9 revisions)
- Abronia nana var. nana (9 revisions)
- Selaginella standleyi (9 revisions)
- Aspidotis densa (9 revisions)
- Carex paeninsulae (9 revisions)
- Clematis hirsutissima var. hirsutissima (9 revisions)
- Schoenoplectus (9 revisions)
- Thelypteris subg. Amauropelta (9 revisions)
- Selaginella asprella (9 revisions)
- Tanacetum balsamita (9 revisions)
- Hydrocharitaceae Illustrations (9 revisions)
- Betulaceae (9 revisions)
- Ivesia sect. Ivesia (9 revisions)
- Myosurus cupulatus (9 revisions)
- Sclerocactus wrightiae (9 revisions)
- Corylus (9 revisions)
- Aizoaceae (9 revisions)
- Warnstorfia fluitans (9 revisions)
- Stegonia (9 revisions)
- Notholaena grayi subsp. grayi (9 revisions)
- Palhinhaea (9 revisions)
- Humulus lupulus var. pubescens (9 revisions)
- Polypodium saximontanum (9 revisions)
- Azolla filiculoides (9 revisions)
- Leitneriaceae Illustrations (9 revisions)
- Clematis viticella (9 revisions)
- Eriogonum effusum (9 revisions)
- Consolida pubescens (9 revisions)
- Thalictrum coriaceum (9 revisions)
- Ranunculus pusillus (9 revisions)
- Phanerophlebia auriculata (9 revisions)
- Woodsia oregana subsp. oregana (9 revisions)
- Persea palustris (9 revisions)
- Salvinia minima (9 revisions)
- Juncus vaseyi (9 revisions)
- Ephedra trifurca (9 revisions)
- Marsileaceae Illustrations (9 revisions)
- Phytolacca americana var. rigida (9 revisions)
- Eriogonum ericifolium (9 revisions)
- Clematis viticaulis (9 revisions)
- Clematis viorna (9 revisions)
- Pediocactus simpsonii (9 revisions)
- Myrica hartwegii (9 revisions)
- Drosanthemum (9 revisions)
- Woodsia scopulina subsp. scopulina (9 revisions)
- Dendromecon harfordii (9 revisions)
- Botrychium biternatum (9 revisions)
- Neckeraceae Illustrations (9 revisions)
- Portulaca grandiflora (9 revisions)
- Ranunculus occidentalis var. brevistylis (9 revisions)
- Coryphantha robustispina (9 revisions)
- Alnus serrulata (9 revisions)
- Gisekia pharnacioides (9 revisions)
- Agave americana var. americana (9 revisions)
- Taxodium distichum var. imbricarium (9 revisions)
- Ulmus alata (9 revisions)
- Pinus jeffreyi (9 revisions)
- Phlebodium aureum (9 revisions)
- Picramniaceae Illustrations (9 revisions)
- Ranunculus hebecarpus (9 revisions)
- Coryphantha vivipara (9 revisions)
- Anemone quinquefolia var. minima (9 revisions)
- Cylindropuntia imbricata var. argentea (9 revisions)
- Botrychium spathulatum (9 revisions)
- Osmunda regalis var. spectabilis (9 revisions)
- Nymphaea lotus (9 revisions)
- Trichomanes holopterum (9 revisions)
- Pottiaceae Illustrations (9 revisions)
- Rosaceae tribe Exochordeae (9 revisions)
- Myosurus sessilis (9 revisions)
- Ferocactus wislizeni (9 revisions)
- Corydalis scouleri (9 revisions)
- Quercus virginiana (9 revisions)
- Grusonia (9 revisions)
- Anemone okennonii (9 revisions)
- Chenopodium opulifolium (9 revisions)
- Thelypteris subg. Cyclosorus (9 revisions)
- Cheilanthes microphylla (9 revisions)
- Ranunculus californicus (9 revisions)
- Taxus brevifolia (9 revisions)
- Ruppiaceae Illustrations (9 revisions)
- Coleogyne ramosissima (9 revisions)
- Delphinium nuttallii subsp. nuttallii (9 revisions)
- Quercus sadleriana (9 revisions)
- Soleirolia soleirolii (9 revisions)
- Opuntia humifusa var. humifusa (9 revisions)
- Corylus avellana (9 revisions)
- Collinsia verna (9 revisions)
- Pellaea intermedia (9 revisions)
- Marsilea vestita (9 revisions)
- Brassicaceae tribe Chorisporeae (9 revisions)
- Ranunculus kamtschaticus (9 revisions)
- Smilacaceae Illustrations (9 revisions)
- Quercus berberidifolia (9 revisions)
- Helleborus viridis (9 revisions)
- Opuntia chisosensis (9 revisions)
- Ranunculus eschscholtzii var. suksdorfii (9 revisions)
- Collinsia wrightii (9 revisions)
- Adiantum viridimontanum (9 revisions)
- Pinus radiata (9 revisions)
- Thelypteridaceae Illustrations (9 revisions)
- Eutrochium purpureum var. purpureum (9 revisions)
- Quercus dumosa (9 revisions)
- Aquilegia eximia (9 revisions)
- Corydalis caseana subsp. caseana (9 revisions)
- Opuntia ellisiana (9 revisions)
- Clematis crispa (9 revisions)
- Collinsia concolor (9 revisions)
- Pontederia cordata (9 revisions)
- Asplenium pinnatifidum (9 revisions)
- Polypodium scouleri (9 revisions)
- Quercus boyntonii (9 revisions)
- Macleaya cordata (9 revisions)
- Eriophorum callitrix (9 revisions)
- Eriogonum esmeraldense (9 revisions)
- Zosteraceae Illustrations (9 revisions)
- Apodanthaceae Illustrations (9 revisions)
- Clematis columbiana var. columbiana (9 revisions)
- Quercus pacifica (9 revisions)
- Opuntia polyacantha var. hystricina (9 revisions)
- Delphinium hansenii subsp. hansenii (9 revisions)
- Atriplex sect. Teutliopsis (9 revisions)
- Keckiella lemmonii (9 revisions)
- Woodsia phillipsii (9 revisions)
- Azolla (9 revisions)
- Hexastylis lewisii (9 revisions)
- Helianthus mollis (9 revisions)
- Blechnaceae Illustrations (9 revisions)
- Erigeron strigosus var. strigosus (9 revisions)
- Berberis harrisoniana (9 revisions)
- Chrysolepis (9 revisions)
- Peniocereus (9 revisions)
- Portulaca suffrutescens (9 revisions)
- Vittaria lineata (9 revisions)
- Nephrolepis (9 revisions)
- Nymphaea mexicana (9 revisions)
- Phlegmariurus (9 revisions)
- Canellaceae Illustrations (9 revisions)
- Berberis pinnata (9 revisions)
- Crataegus ×sicca (9 revisions)
- Delphinium hesperium (9 revisions)
- Myrica californica (9 revisions)
- Coptis aspleniifolia (9 revisions)
- Mollugo (9 revisions)
- Atriplex subg. Obione (9 revisions)
- Psilotum (9 revisions)
- Braya glabella subsp. purpurascens (9 revisions)
- Ranunculus parviflorus (9 revisions)
- Azolla caroliniana (9 revisions)
- Ophioglossum vulgatum (9 revisions)
- Engelmannia (9 revisions)
- Commelinaceae Illustrations (9 revisions)
- Cissampelos (9 revisions)
- Berberis vulgaris (9 revisions)
- Boerhavia intermedia (9 revisions)
- Papaver sect. Californicum (9 revisions)
- Allionia (9 revisions)
- Asplenium trichomanes subsp. quadrivalens (9 revisions)
- Deeringothamnus rugelii (9 revisions)
- Asplenium monanthes (9 revisions)
- Asplenium ×biscayneanum (9 revisions)
- Disceliaceae Illustrations (9 revisions)
- Caulophyllum giganteum (9 revisions)
- Quercus intricata (9 revisions)
- Pilosocereus robinii (9 revisions)
- Enemion occidentale (9 revisions)
- Abronia angustifolia (9 revisions)
- Azollaceae (9 revisions)
- Tsuga mertensiana (9 revisions)
- Ceratophyllaceae (9 revisions)
- Vittariaceae (9 revisions)
- Lycopodiella appressa (9 revisions)
- Fontinalaceae Illustrations (9 revisions)
- Meconella denticulata (9 revisions)
- Maclura (9 revisions)
- Aquilegia barnebyi (9 revisions)
- Astrophytum (9 revisions)
- Platystemon (9 revisions)
- Abronia nana var. covillei (9 revisions)
- Scorpidium cossonii (9 revisions)
- Huperzia haleakalae (9 revisions)
- Woodsia neomexicana (9 revisions)
- Delphinium subsect. Wislizenana (9 revisions)
- Trisetum wolfii (10 revisions)
- Desmazeria sicula (10 revisions)
- Helenium elegans (10 revisions)
- Eriogonum microtheca var. laxiflorum (10 revisions)
- Penstemon lentus (10 revisions)
- Penstemon rattanii (10 revisions)
- Eleusine (10 revisions)
- Trichloris crinita (10 revisions)
- Bromus pumpellianus subsp. pumpellianus (10 revisions)
- Leymus arenarius (10 revisions)
- Dichanthelium strigosum subsp. strigosum (10 revisions)
- Eragrostis curtipedicellata (10 revisions)
- Rostraria cristata (10 revisions)
- Glyceria acutiflora (10 revisions)
- Sphaeralcea caespitosa (10 revisions)
- Carex tribuloides (10 revisions)
- Liatris punctata (10 revisions)
- Xanthisma grindelioides (10 revisions)
- Parnassia cirrata (10 revisions)
- Trautvetteria caroliniensis (10 revisions)
- Actaea rubra (10 revisions)
- Claytonia perfoliata (10 revisions)
- Poa subsect. Poa (10 revisions)
- Sporobolus vaginiflorus (10 revisions)
- Bromus vulgaris (10 revisions)
- Leymus cinereus (10 revisions)
- Panicum philadelphicum (10 revisions)
- Paspalum wrightii (10 revisions)
- Phalaris coerulescens (10 revisions)
- Amphibromus (10 revisions)
- Commelina diffusa (10 revisions)
- Lyonia ligustrina (10 revisions)
- Poa atropurpurea (10 revisions)
- Phragmites (10 revisions)
- Bromus tectorum (10 revisions)
- Psathyrostachys (10 revisions)
- Panicum ghiesbreghtii (10 revisions)
- Eragrostis plana (10 revisions)
- Thelypodium integrifolium (10 revisions)
- Melica frutescens (10 revisions)
- Aristida purpurea var. fendleriana (10 revisions)
- Arnica lanceolata (10 revisions)
- Solidago arguta var. arguta (10 revisions)
- Photinia glabra (10 revisions)
- Erechtites hieraciifolius (10 revisions)
- Potentilla anserina (10 revisions)
- Chloropyron maritimum (10 revisions)
- Glyceria grandis var. grandis (10 revisions)
- Aeluropus (10 revisions)
- Bouteloua aristidoides (10 revisions)
- Bromus racemosus (10 revisions)
- Festuca subg. Obtusae (10 revisions)
- Panicum amarum subsp. amarulum (10 revisions)
- Paspalum unispicatum (10 revisions)
- Alopecurus geniculatus (10 revisions)
- Aristida purpurascens var. purpurascens (10 revisions)
- Carex stipata (10 revisions)
- Cirsium pumilum (10 revisions)
- Coryphantha sneedii (10 revisions)
- Cylindropuntia californica (10 revisions)
- Poa nemoralis (10 revisions)
- Tridens carolinianus (10 revisions)
- Bouteloua trifida var. burkii (10 revisions)
- Hordeum brachyantherum subsp. californicum (10 revisions)
- Festuca hallii (10 revisions)
- Panicum anceps subsp. rhizomatum (10 revisions)
- Saccharum ravennae (10 revisions)
- Poa arctica (10 revisions)
- Thysanolaena (10 revisions)
- Physaria lesicae (10 revisions)
- Carex lenticularis (10 revisions)
- Luzula luzuloides (10 revisions)
- Glyceria maxima (10 revisions)
- Cathestecum (10 revisions)
- Hordeum vulgare (10 revisions)
- Festuca rubra subsp. mediana (10 revisions)
- Polytrias (10 revisions)
- Tridens flavus var. chapmanii (10 revisions)
- Melica porteri var. laxa (10 revisions)
- Digitaria filiformis var. filiformis (10 revisions)
- Physaria occidentalis (10 revisions)
- Pectis papposa (10 revisions)
- Philadelphus microphyllus (10 revisions)
- Potentilla gracilis (10 revisions)
- Crataegus margarettae (10 revisions)
- Penstemon pseudospectabilis (10 revisions)
- Poa stenantha (10 revisions)
- Tragus berteronianus (10 revisions)
- Aegilops ventricosa (10 revisions)
- Festuca filiformis (10 revisions)
- Sorghastrum nutans (10 revisions)
- Sporobolus nealleyi (10 revisions)
- Pleuropogon refractus (10 revisions)
- Digitaria simpsonii (10 revisions)
- Melinis repens (10 revisions)
- Poa arida (10 revisions)
- Helianthus debilis (10 revisions)
- Solidago canadensis (10 revisions)
- Heterotheca stenophylla (10 revisions)
- Potentilla effusa (10 revisions)
- Digitalis purpurea (10 revisions)
- Cottea (10 revisions)
- Festuca baffinensis (10 revisions)
- Bothriochloa exaristata (10 revisions)
- Crypsis vaginiflora (10 revisions)
- Bambusa multiplex (10 revisions)
- Anthenantia (10 revisions)
- Urochloa panicoides (10 revisions)
- Torreyochloa pallida var. fernaldii (10 revisions)
- Lycopodiella subappressa (10 revisions)
- Helianthus niveus (10 revisions)
- Crepis modocensis (10 revisions)
- Heliopsis helianthoides (10 revisions)
- Quercus kelloggii (10 revisions)
- Poaceae tribe Danthonieae (10 revisions)
- Muhlenbergia ×curtisetosa (10 revisions)
- Achnatherum lobatum (10 revisions)
- Echinochloa pyramidalis (10 revisions)
- Eriochloa punctata (10 revisions)
- Descurainia pinnata (10 revisions)
- Aira caryophyllea var. cupaniana (10 revisions)
- Najas guadalupensis (10 revisions)
- Erigeron eatonii (10 revisions)
- Penstemon scariosus (10 revisions)
- Keckiella corymbosa (10 revisions)
- Schismus arabicus (10 revisions)
- Vulpia microstachys (10 revisions)
- Andropogon gyrans var. stenophyllus (10 revisions)
- Muhlenbergia curtifolia (10 revisions)
- Phyllostachys aurea (10 revisions)
- Elymus virginicus (10 revisions)
- Echinochloa oryzoides (10 revisions)
- Pennisetum latifolium (10 revisions)
- Deschampsia cespitosa (10 revisions)
- Alchemilla filicaulis (10 revisions)
- Pedicularis bracteosa (10 revisions)
- Aristida californica (10 revisions)
- Eragrostis prolifera (10 revisions)
- Muhlenbergia utilis (10 revisions)
- Dryopteris expansa (10 revisions)
- Elymus glaucus (10 revisions)
- Dichanthelium commutatum subsp. commutatum (10 revisions)
- Cenchrus gracillimus (10 revisions)
- Agrostis gigantea (10 revisions)
- Lycopodium clavatum (10 revisions)
- Cirsium occidentale (10 revisions)
- Rubus idaeus (10 revisions)
- Vauquelinia californica (10 revisions)
- Crataegus ×sicca nothovar. sicca (10 revisions)
- Cerastium fontanum (10 revisions)
- Penstemon ambiguus (10 revisions)
- Puccinellia arctica (10 revisions)
- Schizachyrium niveum (10 revisions)
- Muhlenbergia ×involuta (10 revisions)
- Gymnocarpium robertianum (10 revisions)
- Hesperostipa spartea (10 revisions)
- Elymus elymoides subsp. brevifolius (10 revisions)
- Dichanthelium sect. Lanuginosa (10 revisions)
- Setaria barbata (10 revisions)
- Braya humilis (10 revisions)
- Glyceria fluitans (10 revisions)
- Agrostis pallens (10 revisions)
- Isocoma acradenia (10 revisions)
- Cerastium velutinum (10 revisions)
- Bucklandiella macounii (10 revisions)
- Dactylis (10 revisions)
- Themeda arguens (10 revisions)
- Blepharidachne bigelovii (10 revisions)
- Nassella lepida (10 revisions)
- Elymus lanceolatus (10 revisions)
- Dichanthelium ovale subsp. praecocius (10 revisions)
- Setaria scheelei (10 revisions)
- Calamagrostis montanensis (10 revisions)
- Polypogon elongatus (10 revisions)
- Cucurbita melopepo var. texana (10 revisions)
- Dryas ajanensis (10 revisions)
- Pedicularis parryi (10 revisions)
- Poa marcida (10 revisions)
- Eremochloa ciliaris (10 revisions)
- Chloris canterae var. grandiflora (10 revisions)
- Amelichloa clandestina (10 revisions)
- Elymus tsukushiensis (10 revisions)
- Dichanthelium nudicaule (10 revisions)
- Eragrostis obtusiflora (10 revisions)
- Glyceria septentrionalis (10 revisions)
- Scabrethia scabra (10 revisions)
- Brickellia oblongifolia (10 revisions)
- Beta vulgaris (10 revisions)
- Diarrhena americana (10 revisions)
- Chloris submutica (10 revisions)
- Bromus catharticus var. catharticus (10 revisions)
- ×elyleymus colvillensis (10 revisions)
- Steinchisma hians (10 revisions)
- Bromus catharticus var. elatus (10 revisions)
- ×elyleymus hirtiflorus (10 revisions)
- Dichanthelium portoricense subsp. patulum (10 revisions)
- Axonopus (10 revisions)
- Polanisia dodecandra (10 revisions)
- Trisetum orthochaetum (10 revisions)
- Ventenata (10 revisions)
- Rhynchospora harveyi (10 revisions)
- Ivesia lycopodioides (10 revisions)
- Eriogonum microtheca var. simpsonii (10 revisions)
- Diplacus bigelovii (10 revisions)
- Poa arctica subsp. lanata (10 revisions)
- Eleusine indica (10 revisions)
- Trichloris pluriflora (10 revisions)
- Poaceae subfam. Ehrhartoideae (10 revisions)
- Leymus mollis (10 revisions)
- Dichanthelium sect. Linearifolia (10 revisions)
- Botrychium lanceolatum subsp. lanceolatum (10 revisions)
- Mibora (10 revisions)
- Podagrostis (10 revisions)
- Fimbristylis miliacea (10 revisions)
- Packera neomexicana (10 revisions)
- Ivesia kingii (10 revisions)
- Agalinis maritima (10 revisions)
- Poa tracyi (10 revisions)
- Sporobolus vaginiflorus var. ozarkanus (10 revisions)
- Cynodon transvaalensis (10 revisions)
- Bromus pacificus (10 revisions)
- Leymus salina (10 revisions)
- Panicum philadelphicum subsp. gattingeri (10 revisions)
- Paspalum nicorae (10 revisions)
- Phalaris minor (10 revisions)
- Juncus covillei (10 revisions)
- Liatris spicata (10 revisions)
- Ranunculus cymbalaria (10 revisions)
- Penstemon eriantherus (10 revisions)
- Poa fendleriana (10 revisions)
- Leptochloa fusca (10 revisions)
- Bromus madritensis (10 revisions)
- Psathyrostachys juncea (10 revisions)
- Eragrostis lutescens (10 revisions)
- Paspalum setaceum var. setaceum (10 revisions)
- Limnodea (10 revisions)
- Aristida purpurea var. longiseta (10 revisions)
- Sphaeralcea rusbyi (10 revisions)
- Lycopodiella (10 revisions)
- Centaurea stoebe (10 revisions)
- Persicaria meisneriana (10 revisions)
- Linderniaceae Illustrations (10 revisions)
- Mirabilis jalapa (10 revisions)
- Poa pringlei (10 revisions)
- Bouteloua aristidoides var. aristidoides (10 revisions)
- Bromus danthoniae (10 revisions)
- Zizania latifolia (10 revisions)
- Panicum amarum subsp. amarum (10 revisions)
- Alopecurus aequalis (10 revisions)
- Aristida purpurascens var. tenuispica (10 revisions)
- Physaria kingii (10 revisions)
- Salix ovalifolia (10 revisions)
- Pityopsis aspera (10 revisions)
- Cordylanthus kingii (10 revisions)
- Poa interior (10 revisions)
- Tridens muticus (10 revisions)
- Leptochloa fusca subsp. uninervia (10 revisions)
- Festuca campestris (10 revisions)
- Eragrostis pilosa var. perplexa (10 revisions)
- Saccharum spontaneum (10 revisions)
- Thysanolaena latifolia (10 revisions)
- Carex fissa (10 revisions)
- Eupatorium album (10 revisions)
- Laportea aestuans (10 revisions)
- Salsola kali (10 revisions)
- Poa keckii (10 revisions)
- Cathestecum brevifolium (10 revisions)
- Eremopyrum triticeum (10 revisions)
- Festuca rubra subsp. pruinosa (10 revisions)
- Polytrias amaura (10 revisions)
- Tridens flavus var. flavus (10 revisions)
- Melica porteri var. porteri (10 revisions)
- Digitaria filiformis var. laeviglumis (10 revisions)
- Panicum hemitomon (10 revisions)
- Carex aquatilis (10 revisions)
- Pyrrocoma crocea (10 revisions)
- Fragaria vesca (10 revisions)
- Poa stenantha var. stenantha (10 revisions)
- Tragus australianus (10 revisions)
- Aegilops crassa (10 revisions)
- Festuca trachyphylla (10 revisions)
- Chrysopogon (10 revisions)
- Sporobolus flexuosus (10 revisions)
- Bambusa bambos (10 revisions)
- Digitaria texana (10 revisions)
- Poa ×limosa (10 revisions)
- Artemisia norvegica (10 revisions)
- Saururaceae (10 revisions)
- Penstemon glaber (10 revisions)
- Cottea pappophoroides (10 revisions)
- Festuca groenlandica (10 revisions)
- Bothriochloa alta (10 revisions)
- Erioneuron pilosum (10 revisions)
- Saxifraga rivularis (10 revisions)
- Achnatherum thurberianum (10 revisions)
- Anthenantia rufa (10 revisions)
- Eragrostis pectinacea var. tracyi (10 revisions)
- Magnolia acuminata (10 revisions)
- Torreyochloa pallida var. pallida (10 revisions)
- Passiflora foetida (10 revisions)
- Symphyotrichum puniceum (10 revisions)
- Betula occidentalis (10 revisions)
- Corispermum ochotense (10 revisions)
- Cortaderia (10 revisions)
- Leucopoa (10 revisions)
- Andropogon sect. Andropogon (10 revisions)
- Achnatherum aridum (10 revisions)
- ×elyhordeum (10 revisions)
- Echinochloa paludigena (10 revisions)
- Eriochloa aristata (10 revisions)
- Aira praecox (10 revisions)
- Thymophylla pentachaeta (10 revisions)
- Chrysogonum virginianum (10 revisions)
- Solidago rigida (10 revisions)
- Ranunculus hispidus var. caricetorum (10 revisions)
- Magnolia tripetala (10 revisions)
- Schismus barbatus (10 revisions)
- Ribes oxyacanthoides (10 revisions)
- Vulpia microstachys var. confusa (10 revisions)
- Andropogon tracyi (10 revisions)
- Muhlenbergia pauciflora (10 revisions)
- Androsace elongata (10 revisions)
- Achnatherum ×bloomeri (10 revisions)
- Elymus virginicus var. halophilus (10 revisions)
- Echinochloa oryzicola (10 revisions)
- Eragrostis minor (10 revisions)
- Bolboschoenus maritimus (10 revisions)
- Jamesia americana (10 revisions)
- Cerastium arvense (10 revisions)
- Aristida californica var. californica (10 revisions)
- Puccinellia phryganodes (10 revisions)
- Cymbopogon (10 revisions)
- Blepharoneuron (10 revisions)
- Macrochloa (10 revisions)
- Dichanthelium commutatum subsp. equilaterale (10 revisions)
- Cenchrus spinifex (10 revisions)
- Coincya monensis (10 revisions)
- Stenotus lanuginosus (10 revisions)
- Crataegus ×sicca nothovar. glabrifolia (10 revisions)
- Puccinellia andersonii (10 revisions)
- Eragrostis bahiensis (10 revisions)
- Muhlenbergia longiligula (10 revisions)
- Piptochaetium (10 revisions)
- Elymus elymoides subsp. californicus (10 revisions)
- Setaria palmifolia (10 revisions)
- Calamagrostis cinnoides (10 revisions)
- Agrostis hallii (10 revisions)
- Heliomeris multiflora (10 revisions)
- Euphorbia geyeri (10 revisions)
- Penstemon crandallii (10 revisions)
- Dactylis glomerata (10 revisions)
- Muhlenbergia sinuosa (10 revisions)
- Nassella pulchra (10 revisions)
- Elymus lanceolatus subsp. lanceolatus (10 revisions)
- Dichanthelium ovale subsp. pseudopubescens (10 revisions)
- Setaria villosissima (10 revisions)
- Calamagrostis perplexa (10 revisions)
- Polypogon fugax (10 revisions)
- Senecio flaccidus (10 revisions)
- Bebbia juncea (10 revisions)
- Arenaria serpyllifolia (10 revisions)
- Lagotis glauca (10 revisions)
- Poa kelloggii (10 revisions)
- Eragrostis airoides (10 revisions)
- Chloris elata (10 revisions)
- Austrostipa (10 revisions)
- Elymus ciliaris (10 revisions)
- Dichanthelium sect. Ensifolia (10 revisions)
- Setaria viridis var. viridis (10 revisions)
- Streptanthus carinatus (10 revisions)
- Avena barbata (10 revisions)
- Phleum subulatum (10 revisions)
- Paysonia lasiocarpa (10 revisions)
- Solidago (10 revisions)
- Rosa lucieae (10 revisions)
- Ivesia baileyi (10 revisions)
- Pedicularis sudetica (10 revisions)
- Poa supina (10 revisions)
- Zea mays subsp. mays (10 revisions)
- Chloris radiata (10 revisions)
- Poa sect. Poa (10 revisions)
- Eustachys (10 revisions)
- Bromus sitchensis (10 revisions)
- ×elyleymus mossii (10 revisions)
- Dichanthelium portoricense subsp. portoricense (10 revisions)
- Axonopus fissifolius (10 revisions)
- Trisetum canescens (10 revisions)
- Ventenata dubia (10 revisions)
- Colubrina cubensis (10 revisions)
- Rubus leucodermis (10 revisions)
- Eriogonum microtheca var. panamintense (10 revisions)
- Veronica wormskjoldii (10 revisions)
- Poa sect. Homalopoa (10 revisions)
- Eleusine coracana (10 revisions)
- Willkommia (10 revisions)
- Bromus latiglumis (10 revisions)
- Leymus mollis subsp. mollis (10 revisions)
- Dichanthelium wilcoxianum (10 revisions)
- Paspalum notatum (10 revisions)
- Mibora minima (10 revisions)
- Solidago puberula (10 revisions)
- Rosa woodsii (10 revisions)
- Polygonum polygaloides (10 revisions)
- Atriplex gardneri (10 revisions)
- Poa arnowiae (10 revisions)
- Sporobolus vaginiflorus var. vaginiflorus (10 revisions)
- Cynodon dactylon (10 revisions)
- Bromus erectus (10 revisions)
- Leymus salina subsp. mojavensis (10 revisions)
- Panicum philadelphicum subsp. lithophilum (10 revisions)
- Paspalum malacophyllum (10 revisions)
- Diphasiastrum sitchense (10 revisions)
- Phalaris aquatica (10 revisions)
- Artemisia borealis (10 revisions)
- Solidago curtisii (10 revisions)
- Rosa acicularis (10 revisions)
- Minuartia nuttallii (10 revisions)
- Castilleja tenuiflora (10 revisions)
- Poa fendleriana subsp. albescens (10 revisions)
- Arundo (10 revisions)
- Ribes inerme (10 revisions)
- Ehrharta erecta (10 revisions)
- Zizania palustris var. palustris (10 revisions)
- Panicum hallii (10 revisions)
- Paspalum setaceum var. stramineum (10 revisions)
- Limnodea arkansana (10 revisions)
- Aristida purpurea var. nealleyi (10 revisions)
- Physaria gracilis (10 revisions)
- Lycopodiella inundata (10 revisions)
- Mazaceae Illustrations (10 revisions)
- Penstemon leonardii (10 revisions)
- Poa sect. Dioicopoa (10 revisions)
- Bouteloua aristidoides var. arizonica (10 revisions)
- Bromus caroli-henrici (10 revisions)
- Panicum virgatum (10 revisions)
- Reimarochloa oligostachya (10 revisions)
- Alopecurus aequalis var. aequalis (10 revisions)
- Aristida purpurascens var. virgata (10 revisions)
- Carex crinita (10 revisions)
- Lycopodiaceae (10 revisions)
- Orobanche uniflora (10 revisions)
- Poa glauca (10 revisions)
- Aristida floridana (10 revisions)
- Bouteloua trifida var. trifida (10 revisions)
- Hordeum jubatum subsp. intermedium (10 revisions)
- Festuca ligulata (10 revisions)
- Panicum sect. Tenera (10 revisions)
- Eragrostis palmeri (10 revisions)
- Sedum spathulifolium (10 revisions)
- Poa secunda (10 revisions)
- Poaceae subfam. Panicoideae (10 revisions)
- Poa suksdorfii (10 revisions)
- Cathestecum erectum (10 revisions)
- Eremopyrum bonaepartis (10 revisions)
- Luziola (10 revisions)
- Microstegium (10 revisions)
- Redfieldia (10 revisions)
- Melica montezumae (10 revisions)
- Digitaria filiformis var. villosa (10 revisions)
- Panicum sect. Phanopyrum (10 revisions)
- Cucumis sativus (10 revisions)
- Sagittaria graminea (10 revisions)
- Erigeron peregrinus (10 revisions)
- Poa stenantha var. vivipara (10 revisions)
- Tragus heptaneuron (10 revisions)
- Festuca auriculata (10 revisions)
- Eragrostis hirsuta (10 revisions)
- Sporobolus giganteus (10 revisions)
- Pleuropogon sabinei (10 revisions)
- Digitaria didactyla (10 revisions)
- Urochloa mutica (10 revisions)
- Poa ×gaspensis (10 revisions)
- Symphyotrichum ontarionis (10 revisions)
- Pyrrocoma racemosa (10 revisions)
- Spiraea alba (10 revisions)
- Leptochloa scabra (10 revisions)
- Festuca minutiflora (10 revisions)
- Bothriochloa barbinodis (10 revisions)
- Calamovilfa (10 revisions)
- Achnatherum coronatum (10 revisions)
- Urochloa platyphylla (10 revisions)
- Torreyochloa pallida var. pauciflora (10 revisions)
- Arctanthemum arcticum (10 revisions)
- Agoseris grandiflora (10 revisions)
- Heterotheca camporum (10 revisions)
- Chaenorhinum minus (10 revisions)
- Cortaderia jubata (10 revisions)
- Leucopoa kingii (10 revisions)
- Andropogon gerardii (10 revisions)
- Muhlenbergia frondosa (10 revisions)
- Achnatherum eminens (10 revisions)
- ×elyhordeum dakotense (10 revisions)
- Eragrostis hypnoides (10 revisions)
- Carex microchaeta (10 revisions)
- Coleanthus (10 revisions)
- Malvaceae (10 revisions)
- Nothocalaïs alpestris (10 revisions)
- Doellingeria umbellata (10 revisions)
- Linaria dalmatica (10 revisions)
- Karroochloa (10 revisions)
- Vulpia microstachys var. microstachys (10 revisions)
- Andropogon brachystachyus (10 revisions)
- Muhlenbergia polycaulis (10 revisions)
- Ptilagrostis (10 revisions)
- Leersia lenticularis (10 revisions)
- Sacciolepis (10 revisions)
- Pennisetum polystachion (10 revisions)
- Deschampsia cespitosa subsp. cespitosa (10 revisions)
- Cakile lanceolata (10 revisions)
- Carex glareosa (10 revisions)
- Eleocharis tenuis (10 revisions)
- Chaenactis carphoclinia (10 revisions)
- Aristida californica var. glabrata (10 revisions)
- Puccinellia rupestris (10 revisions)
- Cymbopogon jwarancusa (10 revisions)
- Muhlenbergia richardsonis (10 revisions)
- Dodecatheon conjugens (10 revisions)
- Macrochloa tenacissima (10 revisions)
- Elymus glaucus subsp. mackenziei (10 revisions)
- Dichanthelium commutatum subsp. joorii (10 revisions)
- Cenchrus longispinus (10 revisions)
- Carex microglochin (10 revisions)
- Agrostis canina (10 revisions)
- Aphanostephus ramosissimus (10 revisions)
- Puccinellia distans (10 revisions)
- Schizachyrium sanguineum (10 revisions)
- Muhlenbergia expansa (10 revisions)
- Piptochaetium pringlei (10 revisions)
- Elymus elymoides subsp. elymoides (10 revisions)
- Dichanthelium acuminatum subsp. acuminatum (10 revisions)
- Setaria megaphylla (10 revisions)
- Calamagrostis scopulorum (10 revisions)
- Agrostis hooveri (10 revisions)
- Equisetum (10 revisions)
- Eleocharis flavescens (10 revisions)
- Chloracantha spinosa (10 revisions)
- Crataegus schuettei (10 revisions)
- Castilleja martini (10 revisions)
- Lamarckia (10 revisions)
- Themeda triandra (10 revisions)
- Muhlenbergia minutissima (10 revisions)
- Poaceae tribe Olyreae (10 revisions)
- Elymus lanceolatus subsp. psammophilus (10 revisions)
- Dichanthelium ovale subsp. villosissimum (10 revisions)
- Setaria macrosperma (10 revisions)
- Calamagrostis canadensis (10 revisions)
- Polypogon australis (10 revisions)
- Selaginellaceae (10 revisions)
- Linum berlandieri (10 revisions)
- Stellaria borealis (10 revisions)
- Fallopia japonica (10 revisions)
- Thalictrum sect. Leucocoma (10 revisions)
- Poa autumnalis (10 revisions)
- Rottboellia (10 revisions)
- Chloris barbata (10 revisions)
- Primula cuneifolia (10 revisions)
- Austrostipa elegantissima (10 revisions)
- Elymus semicostatus (10 revisions)
- Dichanthelium ensifolium (10 revisions)
- Setaria italica (10 revisions)
- Avena fatua (10 revisions)
- Phleum arenarium (10 revisions)
- Sonchus arvensis (10 revisions)
- Poa pratensis (10 revisions)
- Eustachys glauca (10 revisions)
- Bromus arizonicus (10 revisions)
- ×elyleymus ontariensis (10 revisions)
- Dichanthelium sect. Angustifolia (10 revisions)
- Axonopus compressus (10 revisions)
- Melica torreyana (10 revisions)
- Cynosurus (10 revisions)
- Physaria argyraea (10 revisions)
- Lycopodium hickeyi (10 revisions)
- Senecio serra (10 revisions)
- Helenium microcephalum (10 revisions)
- Sclerocactus parviflorus (10 revisions)
- Penstemon rydbergii (10 revisions)
- Poa bolanderi (10 revisions)
- Eleusine coracana subsp. africana (10 revisions)
- Leptochloa dubia (10 revisions)
- Bromus laevipes (10 revisions)
- Zizania aquatica var. brevis (10 revisions)
- Dichanthelium perlongum (10 revisions)
- Paspalum minus (10 revisions)
- Podagrostis humilis (10 revisions)
- Malus ioensis (10 revisions)
- Poa cuspidata (10 revisions)
- Sporobolus neglectus (10 revisions)
- Cynodon dactylon var. aridus (10 revisions)
- Bromus suksdorfii (10 revisions)
- Leymus salina subsp. salina (10 revisions)
- Panicum philadelphicum subsp. philadelphicum (10 revisions)
- Paspalum racemosum (10 revisions)
- Phalaris brachystachys (10 revisions)
- Amphibromus neesii (10 revisions)
- Potamogeton foliosus (10 revisions)
- Eremogone capillaris (10 revisions)
- Penstemon glandulosus (10 revisions)
- Poa fendleriana subsp. fendleriana (10 revisions)
- Calamovilfa gigantea (10 revisions)
- Bromus rubens (10 revisions)
- Thinopyrum (10 revisions)
- Panicum hallii subsp. filipes (10 revisions)
- Paspalum setaceum var. supinum (10 revisions)
- Carex luzulina (10 revisions)
- Ammophila (10 revisions)
- Aristida purpurea var. parishii (10 revisions)
- Symphyotrichum patens (10 revisions)
- Antennaria howellii (10 revisions)
- Orobanchaceae Illustrations (10 revisions)
- Poa arachnifera (10 revisions)
- Cynodon plectostachyus (10 revisions)
- Bouteloua eludens (10 revisions)
- Bromus lanceolatus (10 revisions)
- Festuca paradoxa (10 revisions)
- Panicum sect. Urvilleana (10 revisions)
- Poaceae tribe Andropogoneae (10 revisions)
- Sedum laxum (10 revisions)
- Alopecurus aequalis var. sonomensis (10 revisions)
- Dinebra (10 revisions)
- Tradescantia occidentalis (10 revisions)
- Antennaria rosea (10 revisions)
- Artemisia tridentata (10 revisions)
- Potentilla supina (10 revisions)
- Horkelia fusca (10 revisions)
- Penstemon barbatus (10 revisions)
- Tridens muticus var. elongatus (10 revisions)
- Bouteloua kayi (10 revisions)
- Oryza (10 revisions)
- Festuca thurberi (10 revisions)
- Panicum tenerum (10 revisions)
- Saccharum officinarum (10 revisions)
- Poa unilateralis (10 revisions)
- Poaceae tribe Gynerieae (10 revisions)
- Aster alpinus (10 revisions)
- Horkelia congesta (10 revisions)
- Crataegus chrysocarpa (10 revisions)
- Penstemon floridus (10 revisions)
- Poa sect. Secundae (10 revisions)
- Leptochloa panicea subsp. brachiata (10 revisions)
- Eremopyrum orientale (10 revisions)
- Festuca rubra subsp. rubra (10 revisions)
- Microstegium vimineum (10 revisions)
- Redfieldia flexuosa (10 revisions)
- Saxifraga oppositifolia (10 revisions)
- Melica mutica (10 revisions)
- Digitaria leucocoma (10 revisions)
- Panicum gymnocarpon (10 revisions)
- Artemisia laciniata (10 revisions)
- Eupatorium leucolepis (10 revisions)
- Euphorbia pediculifera (10 revisions)
- Muehlenbeckia hastulata (10 revisions)
- Castilleja ambigua (10 revisions)
- Poa napensis (10 revisions)
- Tragus racemosus (10 revisions)
- Oryza punctata (10 revisions)
- Festuca lenensis (10 revisions)
- Chrysopogon pauciflorus (10 revisions)
- Sporobolus junceus (10 revisions)
- Saxifraga bronchialis (10 revisions)
- Sideroxylon lanuginosum (10 revisions)
- Poaceae tribe Stipeae (10 revisions)
- Digitaria eriantha (10 revisions)
- Urochloa reptans (10 revisions)
- ×dupoa (10 revisions)
- Lechea pulchella (10 revisions)
- Turnera ulmifolia (10 revisions)
- Solidago altissima (10 revisions)
- Crataegus scabrida (10 revisions)
- Thalictrum alpinum (10 revisions)
- Triphysaria eriantha (10 revisions)
- Euphrasia stricta (10 revisions)
- Poaceae tribe Orcuttieae (10 revisions)
- Festuca frederikseniae (10 revisions)
- Bothriochloa springfieldii (10 revisions)
- Calamovilfa longifolia (10 revisions)
- Achnatherum parishii (10 revisions)
- Alloteropsis (10 revisions)
- Catabrosa (10 revisions)
- Perityle microglossa (10 revisions)
- Spiraea douglasii (10 revisions)
- Ranunculus gmelinii (10 revisions)
- Eremogone franklinii (10 revisions)
- Cortaderia selloana (10 revisions)
- Schedonorus (10 revisions)
- Andropogon hallii (10 revisions)
- Erioneuron nealleyi (10 revisions)
- Achnatherum richardsonii (10 revisions)
- Echinochloa muricata (10 revisions)
- Eriochloa acuminata (10 revisions)
- Glyceria striata (10 revisions)
- Hypericum nitidum (10 revisions)
- Petrophytum caespitosum subsp. caespitosum (10 revisions)
- Mecardonia acuminata (10 revisions)
- Karroochloa purpurea (10 revisions)
- Vulpia microstachys var. pauciflora (10 revisions)
- Andropogon virginicus (10 revisions)
- Muhlenbergia arsenei (10 revisions)
- Ptilagrostis kingii (10 revisions)
- Elymus virginicus var. intermedius (10 revisions)
- Sacciolepis indica (10 revisions)
- Pennisetum pedicellatum (10 revisions)
- Carex viridula (10 revisions)
- Deschampsia cespitosa subsp. holciformis (10 revisions)
- Haploësthes greggii (10 revisions)
- Microseris douglasii (10 revisions)
- Silphium integrifolium (10 revisions)
- Rhamnus utilis (10 revisions)
- Cassiope tetragona (10 revisions)
- Gossypianthus lanuginosus (10 revisions)
- Aristida patula (10 revisions)
- Botrychium minganense (10 revisions)
- Puccinellia fasciculata (10 revisions)
- Cymbopogon nardus (10 revisions)
- Muhlenbergia filiformis (10 revisions)
- Celtica (10 revisions)
- Elymus glaucus subsp. virescens (10 revisions)
- Dichanthelium leibergii (10 revisions)
- Cenchrus tribuloides (10 revisions)
- Agrostis vinealis (10 revisions)
- Eleocharis microcarpa (10 revisions)
- Argythamnia mercurialina (10 revisions)
- Potentilla crebridens (10 revisions)
- Poaceae tribe Nardeae (10 revisions)
- Schizachyrium sanguineum var. hirtiflorum (10 revisions)
- Muhlenbergia capillaris (10 revisions)
- Piptochaetium avenaceum (10 revisions)
- Leersia oryzoides (10 revisions)
- Setaria subg. Paurochaetium (10 revisions)
- Calamagrostis muiriana (10 revisions)
- Hypericum ascyron (10 revisions)
- Asplenium ×heteroresiliens (10 revisions)
- Ericameria cooperi (10 revisions)
- Erigeron clokeyi (10 revisions)
- Lamarckia aurea (10 revisions)
- Elionurus (10 revisions)
- Muhlenbergia texana (10 revisions)
- Nassella cernua (10 revisions)
- Elymus lanceolatus subsp. riparius (10 revisions)
- Dichanthelium wrightianum (10 revisions)
- Setaria setosa (10 revisions)
- Calamagrostis canadensis var. canadensis (10 revisions)
- Polypogon monspeliensis (10 revisions)
- Vitis cinerea (10 revisions)
- Acleisanthes lanceolata (10 revisions)
- Poa wolfii (10 revisions)
- Rottboellia cochinchinensis (10 revisions)
- Chloris pilosa (10 revisions)
- Austrostipa ramosissima (10 revisions)
- Dichanthelium ensifolium subsp. curtifolium (10 revisions)
- Setaria faberi (10 revisions)
- Avena hybrida (10 revisions)
- Gastridium (10 revisions)
- Eragrostis atrovirens (10 revisions)
- Eustachys petraea (10 revisions)
- Bromus aleutensis (10 revisions)
- ×elyleymus uclueletensis (10 revisions)
- Dichanthelium aciculare (10 revisions)
- Axonopus furcatus (10 revisions)
- Trisetum cernuum (10 revisions)
- Cynosurus cristatus (10 revisions)
- Eriophyllum lanatum (10 revisions)
- Rudbeckia triloba (10 revisions)
- Eriogonum microtheca var. corymbosoides (10 revisions)
- Sclerocactus cloverae (10 revisions)
- Verbascum thapsus (10 revisions)
- Poaceae tribe Meliceae (10 revisions)
- Eleusine coracana subsp. coracana (10 revisions)
- Schedonnardus (10 revisions)
- Sedum wrightii (10 revisions)
- Bromus kalmii (10 revisions)
- Leymus mollis subsp. villosissimus (10 revisions)
- Dichanthelium linearifolium (10 revisions)
- Paspalum blodgettii (10 revisions)
- Anthoxanthum aristatum (10 revisions)
- Lachnagrostis (10 revisions)
- Apodanthera undulata (10 revisions)
- Sphaeromeria potentilloides (10 revisions)
- Cirsium horridulum (10 revisions)
- Rubus arcticus (10 revisions)
- Poa nervosa (10 revisions)
- Sporobolus virginicus (10 revisions)
- Cynodon dactylon var. dactylon (10 revisions)
- Bromus mucroglumis (10 revisions)
- Leymus salina subsp. salmonis (10 revisions)
- Panicum flexile (10 revisions)
- Paspalum intermedium (10 revisions)
- Sedum stenopetalum (10 revisions)
- Melica bulbosa (10 revisions)
- Aristida oligantha (10 revisions)
- Carex tenera (10 revisions)
- Liatris pycnostachya (10 revisions)
- Atriplex torreyi (10 revisions)
- Chenopodium polyspermum (10 revisions)
- Poa fendleriana subsp. longiligula (10 revisions)
- Arundo donax (10 revisions)
- Thinopyrum intermedium (10 revisions)
- Panicum hallii subsp. hallii (10 revisions)
- Paspalum setaceum var. villosissimum (10 revisions)
- Ammophila breviligulata (10 revisions)
- Aristida purpurea var. perplexa (10 revisions)
- Viola praemorsa (10 revisions)
- Hypochaeris microcephala (10 revisions)
- Artemisia arbuscula (10 revisions)
- Centaurea virgata (10 revisions)
- Linum rigidum (10 revisions)
- Ranunculus hederaceus (10 revisions)
- Paulowniaceae Illustrations (10 revisions)
- Poa sect. Pandemos (10 revisions)
- Allolepis (10 revisions)
- Bouteloua chondrosoides (10 revisions)
- Bromus scoparius (10 revisions)
- Festuca subg. Subulatae (10 revisions)
- Panicum urvilleanum (10 revisions)
- Spodiopogon (10 revisions)
- Alopecurus rendlei (10 revisions)
- Aristida condensata (10 revisions)
- Abies balsamea (10 revisions)
- Symphyotrichum ericoides (10 revisions)
- Erigeron philadelphicus (10 revisions)
- Solidago sempervirens (10 revisions)
- Chenopodium berlandieri (10 revisions)
- Poa glauca var. pekulnejensis (10 revisions)
- Bouteloua barbata (10 revisions)
- Hordeum jubatum subsp. jubatum (10 revisions)
- Festuca californica (10 revisions)
- Panicum sect. Obtusa (10 revisions)
- Saccharum bengalense (10 revisions)
- Arctagrostis latifolia (10 revisions)
- Gynerium (10 revisions)
- Ranunculus bulbosus (10 revisions)
- Symphyotrichum drummondii (10 revisions)
- Poa subsect. Secundae (10 revisions)
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