View source for Draba praealta

{{Treatment/ID
|accepted_name=Draba praealta
|accepted_authority=Greene
|publications={{Treatment/Publication
|title=Pittonia
|place=3: 306. 1898
|year=1898
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Draba cascadensis
|authority=Payson & H. St. John
|rank=species
}} {{Treatment/ID/Synonym
|name=Draba columbiana
|authority=Rydberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Draba dolichopoda
|authority=O. E. Schulz
|rank=species
}} {{Treatment/ID/Synonym
|name=Draba lapilutea
|authority=A. Nelson
|rank=species
}} {{Treatment/ID/Synonym
|name=Draba lonchocarpa var. dasycarpa
|authority=O. E. Schulz
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba praealta var. yellowstonensis
|authority=(A. Nelson) O. E. Schulz
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba yellowstonensis
|authority=
|rank=species
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba praealta
|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 praealta]]</div></div>
|volume=Volume 7
|mention_page=page 273, 278, 308, 332
|treatment_page=page 331
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or perennials; (short-lived); caudex simple or branched; not scapose. <b>Stems</b> branched or unbranched, (0.5–)0.8–3.2(–3.8) dm, pubescent throughout, trichomes 3–5-rayed, 0.1–0.4 mm, with simple and 2-rayed ones, 0.4–1 mm. <b>Basal</b> leaves rosulate; subsessile; petiole base ciliate, (trichomes simple and 2-rayed, 0.2–0.8 mm); blade oblanceolate, (0.7–)1–3.5(–4.5) cm × 1.5–7(–9) mm, margins usually dentate, rarely entire, surfaces pubescent, abaxially with stalked, 3–6-rayed trichomes, 0.1–0.5 mm, adaxially with stalked, 3–5-rayed, 0.1–0.6 mm, and simple ones, to 0.8 mm. <b>Cauline</b> leaves (1 or) 2–5(–9); sessile; blade ovate to lanceolate, margins dentate or entire, surfaces pubescent as basal. <b>Racemes</b> (5–)8–30(–37)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. <b>Fruiting</b> pedicels divaricate-ascending to ascending or suberect (not appressed to rachis), straight, (3–)4–10(–12) mm, pubescent, trichomes 3–5-rayed (0.1–0.4 mm), and sometimes simple. <b>Flowers</b>: (late-season ones petaliferous); sepals ovate, 1.7–2.5 mm, pubescent, (trichomes simple and stalked, 2-rayed); petals white, oblanceolate to spatulate, 2.8–3.5(–4) × 0.8–1.2 mm; anthers ovate, 0.2–0.3 mm. <b>Fruits</b> (erect, not appressed to rachis) lanceolate to linear-lanceolate, plane, flattened, (5–)7–12(–15) × 1.5–2.5(–3) mm; valves puberulent, trichomes simple and short-stalked, 2–4-rayed, 0.05–0.25 mm; ovules (24–)30–52 per ovary; style 0.03–0.1(0.15) mm. <b>Seeds</b> oblong, 0.8–1.1 × 0.5–0.6 mm, (often apiculate). <b>2n</b> = 56.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Rocky pine slopes, subalpine areas, alpine meadows, grassy volcanic ridges, woodlands, damp rocky areas, limestone talus, shale cliffs, steep hillsides
|elevation=1200-2900 m
|distribution=Alta.;B.C.;N.W.T.;Yukon;Calif.;Idaho;Mont.;Nev.;Oreg.;Wash.;Wyo.;e Asia (Russian Far East [Chukchi Peninsula]).
|discussion=<p>Morphological and chromosomal evidence (M. D. Windham, unpubl.) suggests that <i>Draba praealta</i> may be an allopolyploid originating through hybridization between <i>D. albertina</i> and <i>D. cana</i>. Both R. C. Rollins (1993) and N. H. Holmgren (2005b) placed <i>D. lonchocarpa</i> var. dasycarpa in the synonymy of <i>D. lonchocarpa</i>. G. A. Mulligan (1974) indicated that the type of var. dasycarpa does not belong to that species and he correctly annotated its isotype (Macoun 64454, CAN) as <i>D. praealta</i>. Mulligan (1976) and Rollins indicated that <i>D. praealta</i> occurs in Alaska, but we have not seen unequivocal material from the state.</p><!--
--><p>We have not seen the material on which A. E. Katenin and V. V. Petrovsky (1995) based their record from the Russian Far East.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba praealta
|authority=Greene
|rank=species
|parent rank=genus
|synonyms=Draba cascadensis;Draba columbiana;Draba dolichopoda;Draba lapilutea;Draba lonchocarpa var. dasycarpa;Draba praealta var. yellowstonensis;Draba yellowstonensis
|basionyms=
|family=Brassicaceae
|phenology=Flowering Jun–Aug.
|habitat=Rocky pine slopes, subalpine areas, alpine meadows, grassy volcanic ridges, woodlands, damp rocky areas, limestone talus, shale cliffs, steep hillsides
|elevation=1200-2900 m
|distribution=Alta.;B.C.;N.W.T.;Yukon;Calif.;Idaho;Mont.;Nev.;Oreg.;Wash.;Wyo.;e Asia (Russian Far East [Chukchi Peninsula]).
|reference=None
|publication title=Pittonia
|publication year=1898
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V7/V7_453.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba praealta
}}<!--

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