View source for Draba cinerea

{{Treatment/ID
|accepted_name=Draba cinerea
|accepted_authority=Adams
|publications={{Treatment/Publication
|title=Mém Soc. Imp. Naturalistes Moscou
|place=5: 103. 1817
|year=1817
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Draba magellanica subsp. cinerea
|authority=(Adams) E. Ekman
|rank=subspecies
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba cinerea
|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 cinerea]]</div></div>
|volume=Volume 7
|mention_page=page 277, 286, 292, 301
|treatment_page=page 300
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (cespitose); caudex simple or branched; rarely scapose. <b>Stems</b> unbranched, (0.3–)0.5–1.6(–2.7) dm, pubescent throughout, trichomes 4–10-rayed, 0.1–0.3 mm, (often some rays branched, simple trichomes sparse, to 0.6 mm). <b>Basal</b> leaves rosulate; petiolate; petiole base and proximalmost margin ciliate, (trichomes simple, 0.2–0.8 mm); blade oblanceolate to narrowly obovate or linear-lanceolate, 0.4–1.5 cm × 1–5 mm, margins usually entire, rarely with 1 tooth on each side, surfaces densely pubescent with minutely stalked, stellate, 8–12-rayed, trichomes 0.1–0.25 mm, (midvein obscure abaxially, apex trichomes simple). <b>Cauline</b> leaves 0–3(–5); sessile; blade ovate or oblong to lanceolate, margins entire, surfaces pubescent as basal. <b>Racemes</b> (3–)5–17(–24)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. <b>Fruiting</b> pedicels divaricate-ascending or ascending, straight, (3–)4–7(–9) mm, pubescent as stem. <b>Flowers</b>: sepals ovate, 1.7–2.5 mm, pubescent, (trichomes simple and short-stalked, 2- or 3-rayed); petals white, spatulate to obovate, 3.5–4.5 × 1.5–2 mm; anthers ovate, 0.3–0.4 mm. <b>Fruits</b> oblong to elliptic, plane, slightly flattened, 5–8 × 2–3 mm; valves pubescent, trichomes short-stalked, 2–5-rayed, 0.05–0.3 mm, (some rays branched); ovules 20–36(–42) per ovary; style (0.1–)0.2–1 mm. <b>Seeds</b> ovoid, 0.6–0.8 × 0.4–0.6 mm. <b>2n</b> = 48.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Jul.
|habitat=Rock outcrops, ridges, meadows, gravel beaches, stream banks, alluvial fans
|elevation=0-500 m
|distribution=Greenland;B.C.;N.W.T.;Nunavut;Ont.;Que.;Sask.;Yukon;Alaska;Europe (Finland;Norway;n Russia);e Asia (Russian Far East;Siberia).
|discussion=<p><i>Draba cinerea</i> is a polymorphic species in which tetraploid, hexaploid, heptaploid, and octoploid chromosome counts (all based on x = 8) have been reported (e.g., R. C. Rollins 1993). Although we have not seen the type collection, we tentatively consider the taxon to be hexaploid, which is the predominant ploidy level throughout the species range, including North America, and also from its type region in Siberia.</p><!--
--><p>Hexaploid <i>Draba cinerea</i> is closely related to decaploid (2n = 80) <i>D. arctica</i>, from which it is distinguished with difficulty. In general, <i>D. cinerea</i> has 1–3(–5)-leaved stems, basal leaf blades usually not terminated with simple trichomes and with obscure midveins abaxially, petals 3.5–4.5 mm, and seeds 0.6–0.8 × 0.4–0.6 mm. By contrast, <i>D. arctica</i> has leafless or 1(–3)-leaved stems, basal leaf blades terminated with simple or 2-rayed trichomes and with midveins distinct abaxially, petals 3.5–6 mm, and seeds (0.8–)0.9–1.1 × (0.6–)0.7–0.8 mm.</p>
|tables=
|references=
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-->{{#Taxon:
name=Draba cinerea
|authority=Adams
|rank=species
|parent rank=genus
|synonyms=Draba magellanica subsp. cinerea
|basionyms=
|family=Brassicaceae
|phenology=Flowering Jun–Jul.
|habitat=Rock outcrops, ridges, meadows, gravel beaches, stream banks, alluvial fans
|elevation=0-500 m
|distribution=Greenland;B.C.;N.W.T.;Nunavut;Ont.;Que.;Sask.;Yukon;Alaska;Europe (Finland;Norway;n Russia);e Asia (Russian Far East;Siberia).
|reference=None
|publication title=Mém Soc. Imp. Naturalistes Moscou
|publication year=1817
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V7/V7_388.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba cinerea
}}<!--

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