View source for Thalictrum macrostylum

{{Treatment/ID
|accepted_name=Thalictrum macrostylum
|accepted_authority=Small & A. Heller
|publications={{Treatment/Publication
|title=Mem. Torrey Bot. Club
|place=3: 8. 1892
|year=1892
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Species
|authority=B. Boivin
}}
|hierarchy=Ranunculaceae;Thalictrum;Thalictrum sect. Leucocoma;Thalictrum macrostylum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Ranunculaceae]]</div><div class="higher-taxon"><small>genus</small>[[Thalictrum]]</div><div class="higher-taxon"><small>section</small>[[Thalictrum sect. Leucocoma]]</div><div class="higher-taxon"><small>species</small>[[Thalictrum macrostylum]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="stem orientation;stem orientation;stem orientation;stem size;stem some measurement;stem pubescence"><b>Stems </b>erect to ± reclining, slender, 50-200 cm, glabrous.</span> <span class="statement" id="st-d0_s1" data-properties="leaf position;leaf position"><b>Leaves </b>basal and cauline;</span> <span class="statement" id="st-d0_s2" data-properties="basal and proximal cauline leaf architecture;cauline distal leaf architecture">basal and proximal cauline petiolate, distal cauline sessile;</span> <span class="statement" id="st-d0_s3" data-properties="petiole pubescence;petiole pubescence;petiole architecture or function or pubescence;rachis pubescence;rachis pubescence;rachis architecture or function or pubescence">petioles and rachises glabrous, neither pubescent nor glandular.</span> <span class="statement" id="st-d0_s4" data-properties="leaf-blade architecture"><b>Leaf-</b>blade ternately and pinnately decompound;</span> <span class="statement" id="st-d0_s5" data-properties="leaflet coloration;leaflet coloration;leaflet coloration;leaflet coloration;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet shape;leaflet atypical length;leaflet length;leaflet width;leaflet l w ratio;leaflet texture;leaflet architecture or coloration or relief;leaflet texture;margin shape or vernation;lobe margin architecture or shape">leaflets grayish green to brownish to bright green, nearly orbiculate to ovate or obovate, apically undivided or shallowly 2-3-lobed, 5-16 (-22) × 3-18 mm, length 1-3.3 times width, leathery and prominently reticulate abaxially, or sometimes quite membranous, margins sometimes revolute, lobe margins entire;</span> <span class="statement" id="st-d0_s6" data-properties="surface pubescence">surfaces abaxially glabrous.</span> <span class="statement" id="st-d0_s7" data-properties="inflorescence shape;inflorescence quantity;inflorescence architecture;raceme shape;raceme quantity;raceme architecture;panicle shape;panicle quantity;panicle architecture"><b>Inflorescences </b>racemes or panicles, elongate, few flowered;</span> <span class="statement" id="st-d0_s8" data-properties="peduncle pubescence;peduncle architecture or function or pubescence;pedicel pubescence;pedicel architecture or function or pubescence">peduncles and pedicels neither pubescent nor glandular.</span> <span class="statement" id="st-d0_s9" data-properties="flower reproduction;flower architecture;flower reproduction;flower reproduction;flower architecture;flower reproduction"><b>Flowers </b>either unisexual with staminate and pistillate on different plants, or bisexual and unisexual with staminate and bisexual on some plants, pistillate and bisexual on others;</span> <span class="statement" id="st-d0_s10" data-properties="sepal atypical quantity;sepal quantity;sepal coloration;sepal coloration;sepal coloration;sepal shape;sepal some measurement">sepals 4 (-6), greenish to white, nearly orbiculate, 1-2 mm;</span> <span class="statement" id="st-d0_s11" data-properties="filament coloration;filament shape;filament shape;filament some measurement;filament texture;filament fragility">filaments white, filiform or sometimes clavate, 1.8-4 mm, rigid to flexible;</span> <span class="statement" id="st-d0_s12" data-properties="anther some measurement">anthers 0.5-1.2 mm.</span> <span class="statement" id="st-d0_s13" data-properties="achene quantity;achene architecture"><b>Achenes </b>numerous, slightly stipitate;</span> <span class="statement" id="st-d0_s14" data-properties="stipe some measurement">stipe 0.3-0.7 mm;</span> <span class="statement" id="st-d0_s15" data-properties="body shape;body some measurement;body architecture;body pubescence">body ovoid, 3-4.5 mm, prominently veined, glabrous;</span> <span class="statement" id="st-d0_s16" data-properties="beak some measurement;2n chromosome quantity">beak 0.7-1.7 mm. <b>2n</b> = 56.</span><!--

-->{{Treatment/Body
|phenology=Flowering late spring–summer (early Jun-mid Jul).
|habitat=Low woods, rich wooded slopes, cliffs, swampy forests, meadows, and limestone sinks
|elevation=500-800 m
|distribution=Ala.;Fla.;Ga.;Miss.;N.C.;S.C.;Va.
|discussion=<p>Much variation in Thalictrum macrostylum seems to be associated with habitat differences, especially the amount of sunlight received. The name T. subrotundum merely represents plants of T. macrostylum growing in deep shade. Common garden studies and cluster analyses do not support recognition of two species (M. Park 1992).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Thalictrum macrostylum
|author=
|authority=Small & A. Heller
|rank=species
|parent rank=section
|synonyms=Species
|basionyms=
|family=Ranunculaceae
|phenology=Flowering late spring–summer (early Jun-mid Jul).
|habitat=Low woods, rich wooded slopes, cliffs, swampy forests, meadows, and limestone sinks
|elevation=500-800 m
|distribution=Ala.;Fla.;Ga.;Miss.;N.C.;S.C.;Va.
|reference=None
|publication title=Mem. Torrey Bot. Club
|publication year=1892
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V3/V3_926.xml
|genus=Thalictrum
|section=Thalictrum sect. Leucocoma
|species=Thalictrum macrostylum
|2n chromosome quantity=56
|achene architecture=stipitate
|achene quantity=numerous
|anther some measurement=0.5mm;1.2mm
|basal and proximal cauline leaf architecture=petiolate
|beak some measurement=0.7mm;1.7mm
|body architecture=veined
|body pubescence=glabrous
|body shape=ovoid
|body some measurement=3mm;4.5mm
|cauline distal leaf architecture=sessile
|filament coloration=white
|filament fragility=pliable
|filament shape=clavate;filiform
|filament some measurement=1.8mm;4mm
|filament texture=rigid
|flower architecture=pistillate;pistillate
|flower reproduction=bisexual;unisexual;bisexual;unisexual
|inflorescence architecture=flowered
|inflorescence quantity=few
|inflorescence shape=elongate
|leaf position=cauline;basal
|leaf-blade architecture=decompound
|leaflet architecture or coloration or relief=reticulate
|leaflet atypical length=16mm;22mm
|leaflet coloration=grayish green;brownish
|leaflet l w ratio=1-3.3
|leaflet length=5mm;16mm
|leaflet shape=nearly orbiculate;ovate or obovate apically undivided or shallowly 2-3-lobed
|leaflet texture=membranous;leathery
|leaflet width=3mm;18mm
|lobe margin architecture or shape=entire
|margin shape or vernation=revolute
|panicle architecture=flowered
|panicle quantity=few
|panicle shape=elongate
|pedicel architecture or function or pubescence=glandular
|pedicel pubescence=pubescent
|peduncle architecture or function or pubescence=glandular
|peduncle pubescence=pubescent
|petiole architecture or function or pubescence=glandular
|petiole pubescence=pubescent;glabrous
|raceme architecture=flowered
|raceme quantity=few
|raceme shape=elongate
|rachis architecture or function or pubescence=glandular
|rachis pubescence=pubescent;glabrous
|sepal atypical quantity=4;6
|sepal coloration=greenish;white
|sepal quantity=4
|sepal shape=orbiculate
|sepal some measurement=1mm;2mm
|stem orientation=erect;more or less reclining
|stem pubescence=glabrous
|stem size=slender
|stem some measurement=50cm;200cm
|stipe some measurement=0.3mm;0.7mm
|surface pubescence=glabrous
}}<!--

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