Lupinus onustus |
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northern lupine, Plumas lupine |
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Habit | Herbs, perennial, 2–3 dm, green, silky; rhizomatous, from slender underground rootstock. |
Stems | short-decumbent, clustered, unbranched. |
Leaves | cauline, clustered near base; stipules 8–10 mm; petiole (5–)8–13 cm; leaflets 5–9, blades oblanceolate, 15–50 × 4–10 mm, abaxial surface silky-hairy, adaxial surface glabrous. |
Racemes | 5–15 cm; flowers not whorled. |
Peduncles | 4–8 cm; bracts deciduous, 3–4 mm. |
Pedicels | 3–5 mm. |
Flowers | 8–11 mm; calyx bulge or spur 0–1 mm, abaxial lobe entire, 3.5–6 mm, adaxial lobe 2-toothed, 2–5 mm; corolla violet, banner glabrous abaxially, lower keel margins glabrous, adaxial margin ciliate. |
Legumes | 3–4.5 cm, hairy. |
Cotyledons | deciduous, petiolate. |
Seeds | 5 or 6, brown, 6–7 mm. |
Lupinus onustus |
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Phenology | Flowering Apr–Sep. |
Habitat | Dry banks, yellow pine forests, serpentine soils. |
Elevation | 500–2000 m. (1600–6600 ft.) |
Distribution |
CA; OR
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Discussion | Lupinus onustus is known in California from the southern Cascade Range, Klamath Ranges, and northern Sierra Nevada, to the Siskiyou Mountains of southwestern Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Lupinus |
Sibling taxa | |
Synonyms | L. alilatissimus, L. mucronulatus, L. oreganus var. pusillulus, L. pinetorum, L. sulphureus subsp. delnortensis, L. thompsonianus, L. violaceus |
Name authority | S. Watson: Proc. Amer. Acad. Arts 11: 127. (1876) |
Web links |