View source for Draba burkei

{{Treatment/ID
|accepted_name=Draba burkei
|accepted_authority=(C. L. Hitchcock) Windham & Beilstein
|publications={{Treatment/Publication
|title=Madroño
|place=50: 221. 2004
|year=2004
}}
|basionyms={{Treatment/ID/Basionym
|name=Draba maguirei var. burkei
|authority=C. L. Hitchcock
|rank=variety
|publication_title=Revis. Drabas W. N. Amer.,
|publication_place=72, plate 5, fig. 37c. 1941
}}
|synonyms=
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba burkei
|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 burkei]]</div></div>
|volume=Volume 7
|mention_page=page 280, 308
|treatment_page=page 298
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (cespitose, forming loose mats); caudex branched (with persistent leaves, branches sometimes terminating in sterile rosettes); scapose. <b>Stems</b> unbranched, 0.3–0.6(–0.9) dm, glabrous. <b>Basal</b> leaves subrosulate; subsessile; blade oblanceolate to obovate, 0.3–0.8(–1.3) cm × 1–2.5 mm, margins entire, (ciliate, trichomes simple, subsetiform, 0.25–0.8 mm), surfaces glabrous. <b>Cauline</b> leaves 0. <b>Racemes</b> 4–10-flowered, ebracteate, elongated in fruit; rachis not flexuous, glabrous. <b>Fruiting</b> pedicels divaricate-ascending to ascending, straight, 4–9(–15) mm, glabrous. <b>Flowers</b>: sepals broadly ovate, 2–3.5 mm, glabrous or sparsely pubescent, (trichomes simple, 0.07–0.35 mm); petals yellow, oblanceolate, 4–6 × 1.5–2 mm; anthers ovate, 0.4–0.5 mm. <b>Fruits</b> ovate, plane, flattened, 3–5.5 × 2–3.2 mm; valves glabrous or puberulent, trichomes simple, 0.02–0.08 mm; ovules 4–10 per ovary; style 0.5–1.7 mm. <b>Seeds</b> ovoid, 1–1.4 × 0.7–1 mm. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Jul.
|habitat=Rocky ridges, steep talus slopes, rock outcrops and crevices
|elevation=1600-3000 m
|distribution=Utah.
|discussion=<p>Of conservation concern.</p><!--
--><p><i>Draba burkei</i> was treated by C. L. Hitchcock (1941) and R. C. Rollins (1993) as a variety of <i>D. maguirei</i>. Chromosome numbers (2n = 20 versus 2n = 32), plant morphology, and molecular data support the recognition of these taxa as independent species (M. D. Windham 2004). <i>Draba burkei</i> is easily distinguished from <i>D. maguirei</i> by having exclusively simple trichomes confined to leaf blade margins (versus mostly branched trichomes on margins and surfaces) and smaller seeds (1–1.4 × 0.7–1 versus 1.6–2 × 1–1.3 mm). It is known from Box Elder, Cache, Morgan, and Weber counties, where it approaches but does not overlap the range of <i>D. maguirei</i>. <i>Draba burkei</i> (as <i>D. maguirei</i> var. burkei) is in the Center for Plant Conservation’s National Collection of Endangered Plants and is listed in NatureServe as a plant of conservation concern.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba burkei
|authority=(C. L. Hitchcock) Windham & Beilstein
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Draba maguirei var. burkei
|family=Brassicaceae
|phenology=Flowering May–Jul.
|habitat=Rocky ridges, steep talus slopes, rock outcrops and crevices
|elevation=1600-3000 m
|distribution=Utah.
|reference=None
|publication title=Madroño
|publication year=2004
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V7/V7_383.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba burkei
}}<!--

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