Draba graminea |
Draba nemorosa |
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woodland draba, woodland whitlow-grass |
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Habit | Plants annual. | |
Stems | (3)6–45(60) cm, pubescent with simple and stalked 2–4-rayed trichomes, glabrous distally. |
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Basal leaves | rosulate or not, oblong-obovate or oblanceolate; (4)10–35(50) × (2)5–15(20) mm; margins dentate or rarely subentire; surfaces pubescent with stalked, 2–4-rayed trichomes. |
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Cauline leaves | 4–12(15); ovate to oblong; margins dentate; surfaces pubescent, sessile. |
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Inflorescences | (10)18–60(92)-flowered; rachises straight, glabrous, fruiting pedicels divaricate; straight, 7–28(35) mm; (1.5)2–7 × as long as fruit, glabrous; bracts 0. |
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Flowers | sepals ovate; (0.7)0.9–1.6 mm; petals spatulate to oblanceolate; (1.2)1.7–2.2(2.5) × (0.4)0.6–1 mm, yellow; tips deeply notched; ovules (30)36–60(72) per ovary; styles 0.01–0.1 mm. |
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Fruits | oblong, elliptic, or oblong-oblanceolate, slightly latiseptate, untwisted; (3)5–8(10) × 1.5–2.5 mm; valves glabrous or puberulent with simple; antrorse trichomes. |
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Seeds | ovoid, 0.5–0.7(0.8) × 0.3–0.4(0.5) mm; wingless. |
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2n | =16. |
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Draba graminea |
Draba nemorosa |
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Distribution | ||
Discussion | Open wooded slopes, rock outcrops, prairies, riverbanks, meadows, roadsides, gravelly grounds, waste places. Flowering Mar–Jul. 0–2200 m. BR, BW, Casc, Col, ECas, Lava, Owy. CA, ID, NV, WA; north to AK, northeast to Quebec, east to MI, southeast to NM; Asia, Europe. Native. |
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Source | Flora of Oregon, volume 2, page 480 Ihsan Al-Shehbaz |
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Sibling taxa | ||
Synonyms | Draba nemorosa var. leiocarpa, Draba nemorosa var. nemorosa | |
Web links |
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