Draba chamissonis G. Don (Q3544)
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Draba chamissonis is a taxon with the rank species within the genus Draba
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English |
Draba chamissonis G. Don
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Draba chamissonis is a taxon with the rank species within the genus Draba
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Statements
taxon/id/Draba chamissonis G. Don
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Draba chamissonis G. Don
Draba chamissonis
G. Don
FNA Editorial Committee. 2010. Flora of North America north of Mexico. Volume 7: Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York.
accepted
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CA-BC
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University of British Columbia Herbarium (UBC), Vancouver, BC. Specimen. http://www.beatymuseum.ubc.ca/herbarium/index.html
US-AK
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Stems unbranched, 0.4–1.2 dm, pubescent throughout, trichomes minutely stalked, stellate, 8–12-rayed, (non-crisped), 0.03–0.3 mm, sometimes with simple and 2-rayed ones, to 0.3 mm.
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Basal leaves rosulate;
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petiole (obsolete), margin usually not ciliate, (trichomes, when present, simple and 2-rayed, 0.2–0.35 mm);
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blade oblanceolate to obovate, 0.4–1 cm × 1–3 mm, margins denticulate or entire, surfaces pubescent with short-stalked, stellate, (non-crisped), 8–12-rayed trichomes, 0.05–0.2 mm, (midvein obscure abaxially).
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blade broadly ovate, margins usually denticulate, rarely entire.
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Racemes 4–10-flowered, proximalmost 1–5 flowers bracteate, elongated;
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Fruiting pedicels ascending, straight, (4–) 6–13 (–20) mm, pubescent as stem.
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Flowers: sepals ovate, 1.5–2.2 mm, pubescent, (trichomes simple and short-stalked, 2–5-rayed);
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petals white, obovate, 2–3.5 × 1.5–2 mm;
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anthers ovate, 0.2–0.3 mm.
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Fruits linear to narrowly lanceolate, slightly twisted or plane, flattened, 5–11 × 1.1–1.6 (–2) mm;
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ovules 16–20 per ovary;
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style 0.1–0.3 mm.
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Seeds ovoid, 0.6–0.9 × 0.3–0.5 mm. 2n = 16.
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