View source for Draba alpina

{{Treatment/ID
|accepted_name=Draba alpina
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 642. 1753
|year=1753
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Draba alpina var. hydeana
|authority=B. Boivin
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba alpina var. inflatisiliqua
|authority=Polunin
|rank=variety
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba alpina
|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 alpina]]</div></div>
|volume=Volume 7
|mention_page=page 285, 302, 318, 325, 330
|treatment_page=page 290
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (cespitose); caudex branched (covered with persistent leaves or leaf remains); scapose. <b>Stems</b> unbranched, (0.3–)0.5–1.7(–2.8) dm, pubescent throughout, trichomes simple and 2-rayed, 0.3–0.8 mm, with 3–5-rayed ones, 0.1–0.3 mm. <b>Basal</b> leaves rosulate; petiolate; petiole base (not thickened), ciliate, (trichomes simple, 0.3–1 mm); blade oblanceolate to obovate or lanceolate to oblong, 0.8–3(–4.5) cm × 2.5–6(–9) mm, margins entire, surfaces abaxially pubescent with stalked, 2–4-rayed trichomes, 0.1–0.5 mm, with simple ones (midvein obscure, not thickened), adaxially glabrous or sparsely pubescent with simple and stalked, 2–4-rayed trichomes. <b>Cauline</b> leaves 0. <b>Racemes</b> 6–18-flowered, ebracteate, considerably elongated in fruit; rachis not flexuous, pubescent as stem. <b>Fruiting</b> pedicels ascending to divaricate-ascending, straight or, sometimes, slightly curved upwards, 4–14(–30) mm, pubescent, trichomes simple and 2–4-rayed. <b>Flowers</b>: sepals (purplish tinged), narrowly ovate, 2.5–3 mm, pubescent, (trichomes simple and fewer, stalked, 2-rayed); petals bright yellow, narrowly obovate, 3.5–5 × 1.7–2.5 mm; anthers ovate, 0.3–0.4 mm. <b>Fruits</b> elliptic, plane, flattened, 6–10 × 2–3 mm; valves glabrous or glabrescent, trichomes simple, (not confined to replum); ovules 12–24 per ovary; style 0.2–0.3 mm (stigma about as wide as style). <b>Seeds</b> (pale brown), ovoid, 0.9–1.3 × 0.6–0.9 mm. <b>2n</b> = 80.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Moist tundra and ridges, sand and gravel flats or beaches
|elevation=0-1000 m
|distribution=Greenland;Man.;Nfld. and Labr. (Labr.);Nunavut;Ont.;Que.;Europe (Finland;Norway;Russia;Sweden).
|discussion=<p>The synonymy above includes two North American names overlooked by C. L. Hitchcock (1941) and R. C. Rollins (1993). <i>Draba alpina</i> was broadly delimited by O. E. Schulz (1927) and included 17 varieties, some of which (e.g., corymbosa, oxycarpa, pilosa) are recognized herein as distinct species. The name <i>D. alpina</i> was so misapplied that it was used for any circumpolar or alpine, scapose, yellow-flowered, perennial <i>Draba</i>. Various chromosome numbers (e.g., 2n = 64, 80, 112, 120; S. I. Warwick and I. A. Al-Shehbaz 2006) have been reported for the species. As circumscribed here, it has the narrow distribution outlined above and includes plants with 2n = 80. Reports of the species from Alaska, Canadian Northwest Territories and Yukon, Siberia, eastern Asia, Russian Far East, and the Central Asian republics are either suspect or very unlikely. The entire <i>D. alpina</i> complex (including the above three species, D. glacialis Adams, <i>D. macounii</i>, etc.) is in need of critical molecular, cytological, and morphological study.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba alpina
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Draba alpina var. hydeana;Draba alpina var. inflatisiliqua
|basionyms=
|family=Brassicaceae
|phenology=Flowering Jun–Aug.
|habitat=Moist tundra and ridges, sand and gravel flats or beaches
|elevation=0-1000 m
|distribution=Greenland;Man.;Nfld. and Labr. (Labr.);Nunavut;Ont.;Que.;Europe (Finland;Norway;Russia;Sweden).
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_365.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba alpina
}}<!--

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