Boechera puberula |
Boechera laevigata |
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hoary rockcress |
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Habit | Plants short-lived perennial; with non-woody caudices. | |
Stems | (1)2–6.3 dm, pubescent with many short-stalked, 3–8-rayed trichomes. |
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Basal leaves | oblanceolate to linear-oblanceolate, 1.5–5 mm wide; margins usually dentate, not ciliate; surfaces densely pubescent with short-stalked, 5–12-rayed trichomes. |
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Cauline leaves | 7–45(65), concealing stem proximally, bases of some leaves auriculate; uppermost pubescent. |
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Inflorescences | 10–40(64)-flowered, fruiting pedicels arched, recurved above horizontal to ascending bases, 4–10 mm, with appressed, branched trichomes. |
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Flowers | sexual, ascending to descending at anthesis; sepals pubescent; petals 5–9 × 0.8–1.8 mm, white to lavender; pollen ellipsoid; ovules 38–64 per ovary; styles 0.01–0.1 mm. |
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Fruits | closely pendent, rarely appressed to rachis, not secund, mostly straight, 3–6.5 cm × 1.9–2.2 mm; margins parallel, pubescent. |
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Seeds | uniseriate, 1.4–1.8 × 1–1.4 mm; wings continuous, 0.1–0.3 mm wide. |
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2n | =14. |
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Boechera puberula |
Boechera laevigata |
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Distribution | ||
Discussion | Rocky slopes, ledges, gravelly hillsides in sagebrush, pinyon-juniper forests. Flowering Apr–Jul. 800–3000 m. BR, BW, Casc, ECas, Lava, Owy. CA, ID, NV, WA; southeast to UT. Native. |
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Source | Flora of Oregon, volume 2, page 456 Ihsan Al-Shehbaz |
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Sibling taxa | ||
Synonyms | Arabis puberula | |
Web links |
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