View source for Draba stenoloba

{{Treatment/ID
|accepted_name=Draba stenoloba
|accepted_authority=Ledebour
|publications={{Treatment/Publication
|title=Fl. Ross.
|place=1: 154. 1841
|year=1841
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Draba acinacis
|authority=H. St. John
|rank=species
}} {{Treatment/ID/Synonym
|name=Draba hirta var. siliquosa
|authority=Chamisso & Schlechtendal
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba macouniana
|authority=Rydberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Draba nemorosa var. stenoloba
|authority=(Ledebour) M. E. Jones
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba nitida var. praelonga
|authority=O. E. Schulz
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba oligantha
|authority=Greene
|rank=species
}} {{Treatment/ID/Synonym
|name=Draba stenoloba var. oligantha
|authority=(Greene) O. E. Schulz
|rank=variety
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba stenoloba
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Arabideae]]</div><div class="higher-taxon"><small>genus</small>[[Draba]]</div><div class="higher-taxon"><small>species</small>[[Draba stenoloba]]</div></div>
|volume=Volume 7
|mention_page=page 272, 273, 276, 278, 282, 287, 289, 341
|treatment_page=page 340
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Biennials </b>or perennials; (short-lived, not cespitose); caudex simple (not fleshy); scapose. <b>Stems</b> often unbranched, (0.2–)0.4–3(–3.4) dm, pubescent proximally, usually glabrous distally, rarely sparsely pubescent, trichomes short-stalked, 2–4-rayed, 0.1–0.4(–0.5) mm. <b>Basal</b> leaves rosulate; petiole (obscure), margin ciliate, (trichomes simple, 0.2–0.4 mm); blade oblanceolate to obovate, 0.4–2.6(–3.1) cm × 1.5–7(–10) mm, margins entire or denticulate, (ciliate as petiole), surfaces pubescent, abaxially with short-stalked, 3- or 4-rayed trichomes, 0.1–0.5 mm, adaxially with simple and stalked, 2–4-rayed trichomes, 0.1–0.5 mm. <b>Cauline</b> leaves (0 or) 1 or 2 (3 or 4); sessile; blade elliptic to lanceolate or ovate, margins toothed, surfaces pubescent, abaxially with short-stalked 3- or 4-rayed trichomes, adaxially with simple and short-stalked, 2–4-rayed trichomes. <b>Racemes</b> (2–)4–10(–15)-flowered, ebracteate, elongated in fruit; rachis not flexuous, usually glabrous, rarely sparsely pubescent. <b>Fruiting</b> pedicels horizontal to divaricate-ascending, straight, 3–14(–19) mm (subequaling or shorter than fruit), usually glabrous, rarely pubescent, trichomes 2–4-rayed. <b>Flowers</b> (chasmogamous, petaliferous); sepals (green or purplish), oblong, 1.5–2.5 mm, glabrous or pubescent, (trichomes simple); petals yellow, oblanceolate, 2.5–3.5 × 0.6–1 mm; anthers ovate, 0.25–0.4 mm. <b>Fruits</b> linear or, rarely, linear-elliptic, plane, flattened, (8–)10–17(–20) × 1.5–2 mm; valves usually glabrous, rarely sparsely puberulent, trichomes simple; ovules 24–36 per ovary; style 0.01–0.15 mm. <b>Seeds</b> ovoid, 0.9–1 × 0.5–0.6 mm. <b>2n</b> = 40.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Jul.
|habitat=Grassy knolls, glacial moraines and creek banks, mesic meadows, alpine thickets
|elevation=600-2300 m
|distribution=Alta.;B.C.;Yukon;Alaska;Oreg.;Wash.
|discussion=<p><i>Draba stenoloba</i> is occasionally confused with <i>D. albertina</i>, but is easily recognized by having exclusively 2–4-rayed (versus mostly simple) trichomes on stems proximally. It is rarely encountered and apparently confined to the Pacific Northwest. In contrast, <i>D. albertina</i> is common and widespread in the mountains of western North America.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Draba stenoloba
|authority=Ledebour
|rank=species
|parent rank=genus
|synonyms=Draba acinacis;Draba hirta var. siliquosa;Draba macouniana;Draba nemorosa var. stenoloba;Draba nitida var. praelonga;Draba oligantha;Draba stenoloba var. oligantha
|basionyms=
|family=Brassicaceae
|phenology=Flowering Jun–Jul.
|habitat=Grassy knolls, glacial moraines and creek banks, mesic meadows, alpine thickets
|elevation=600-2300 m
|distribution=Alta.;B.C.;Yukon;Alaska;Oreg.;Wash.
|reference=None
|publication title=Fl. Ross.
|publication year=1841
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V7/V7_474.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba stenoloba
}}<!--

-->[[Category:Treatment]][[Category:Draba]]