View source for Geraea ← Geraea You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Geraea |accepted_authority=Torrey & A. Gray |publications={{Treatment/Publication |title=Proc. Amer. Acad. Arts |place=1: 48. 1847 |year=1847 }} |common_names=Desert-sunflower |basionyms= |synonyms= |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ecliptinae;Geraea |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Ecliptinae]]</div><div class="higher-taxon"><small>genus</small>[[Geraea]]</div></div> |etymology=Greek geraios, old, alluding to white-haired involucre of Geraea canescens |volume=Volume 21 |mention_page=page 65, 66, 119 |treatment_page=page 122 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or perennials, 10–100 cm. <b>Stems</b> erect, branched (branches ascending). <b>Leaves</b> basal and cauline; alternate; sessile or petiolate; blades (3-nerved) elliptic, lanceolate, oblanceolate, oblong, or ovate, bases auriculate or tapering, margins entire or toothed, faces ± canescent or glandular-puberulent to stipitate-glandular. <b>Heads</b> radiate or discoid, borne singly or in open, paniculiform arrays (peduncles usually longer than involucres). <b>Involucres</b> hemispheric, 7–15 mm diam. <b>Phyllaries</b> persistent, 20–30+ in 2–3+ series (distinct, narrowly lanceolate to linear or narrowly lance-oblong to lance-ovate, subequal to unequal, outer shorter). <b>Receptacles</b> convex, paleate (paleae ± conduplicate, folded around and falling with cypselae). <b>Ray</b> florets 0 or 10–21, neuter; corollas yellow. <b>Disc</b> florets 60–200+, bisexual, fertile; corollas yellow, tubes shorter than gradually to abruptly expanded throats, lobes 5, triangular. <b>Cypselae</b> (black) strongly compressed, narrowly cuneate (margins ± white, long-ciliate, faces ± hairy); pappi persistent, of 2 awns or subulate scales. <b>x</b> = 18.</span><!-- -->{{Treatment/Body |distribution=sw United States;nw Mexico. |discussion=<p>Species 2 (2 in the flora).</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Annuals; leaves sessile or petiolate, bases of blades tapering to wings, faces ± canescent; phyllaries narrowly lanceolate to linear, apices acute (margins shaggy-ciliate); ray florets 10–21 |[[Geraea canescens|Geraea canescens]] |-id=key-0-1 |1 |Perennials; leaves sessile, bases of blades ± auriculate, faces glandular-puberulent; phyllaries narrowly lance-oblong to lance-ovate, apices obtuse (faces densely glandular-puberulent); ray florets 0 |[[Geraea viscida|Geraea viscida]] |} </div></div><!-- -->{{#Taxon: name=Geraea |author=Curtis Clark |authority=Torrey & A. Gray |rank=genus |parent rank=subtribe |synonyms= |basionyms= |family=Asteraceae |distribution=sw United States;nw Mexico. |reference=None |publication title=Proc. Amer. Acad. Arts |publication year=1847 |special status= |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_298.xml |tribe=Asteraceae tribe Heliantheae |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae |genus=Geraea }}<!-- -->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Ecliptinae]] Templates used on this page: Template:Asteraceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Return to Geraea.