Lupinus latifolius |
Lupinus sericatus |
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broad-leaf lupine |
Cobb Mountain lupine |
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Habit | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | Herbs, perennial, 1.5–5 dm, silver to gray-green, short-appressed-hairy. | ||||||||||||||||
Stems | erect or spreading, branched or unbranched. |
erect, ascending, or decumbent, branched. |
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Leaves | cauline, basal when present withered by anthesis; stipules 5–10 mm; petiole 4–20 cm; leaflets 5–11, blades 40–100 × 6–24 mm, abaxial surface ± hairy, adaxial surface glabrous or hairy. |
cauline, clustered near base; stipules 2–7 mm; petiole 5–15 cm; leaflets 4–7, blades widely spoon-shaped, 30–40(–50) × 10–20 mm, surfaces densely silky. |
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Racemes | 16–60 cm; flowers whorled or spirally arranged. |
open to dense, 10–30 cm; flowers ± whorled. |
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Peduncles | 8–20 cm; bracts deciduous, 8–12 mm. |
8–15 cm; bracts deciduous, 3–4 mm. |
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Pedicels | 2–12 mm. |
4–6 mm. |
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Flowers | 8–18 mm; calyx abaxial lobe entire or notched, 4–8 mm, adaxial lobe entire or 2-toothed, 5–10 mm; corolla blue or purple to white, banner patch usually white to yellowish turning purple, banner glabrous abaxially, lower keel margins usually ciliate, adaxial margin ciliate from claw to middle. |
12–16 mm; calyx bulge or spur 0–1 mm, abaxial lobe 3-toothed, 7–10 mm, adaxial lobe 2-toothed, 6–10 mm; corolla purple to violet, banner ± hairy abaxially, lower keel margins usually ± glabrous, adaxial margin ciliate claw to tip. |
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Legumes | 2–4.5 cm, ± densely hairy. |
2–3 cm, hairy. |
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Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
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Seeds | 6–10, mottled dark brown, 3–4 mm. |
3–7, light brown, 3–5 mm. |
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Lupinus latifolius |
Lupinus sericatus |
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Phenology | Flowering Mar–Jun. | |||||||||||||||||
Habitat | Open wooded slopes. | |||||||||||||||||
Elevation | 200–1600 m. [700–5200 ft.] | |||||||||||||||||
Distribution |
w North America; nw Mexico
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CA |
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Discussion | Varieties 5 (5 in the flora). Various authors have differed in their circumscriptions of Lupinus latifolius. For example, P. K. Vaughn and D. B. Dunn (1977) recognized three varieties, D. Isely (1998) recognized six varieties, and C. L. Hitchcock et al. (1955–1969, vol. 3) recognized three varieties. The most conservative approach has been taken here by recognizing taxa that have the clearest characteristics, but that approach might not reflect phylogeny. Research is needed to clarify the varieties and particularly the relationships among L. latifolius and L. arcticus, L. perennis, and L. polyphyllus. Lupinus latifolius is known to cause birth defects in livestock (R. F. Keeler et al. 1977). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lupinus sericatus is known from the southern Inner North Coast Ranges in Colusa, Lake, Napa, and Sonoma counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 11. | FNA vol. 11. | ||||||||||||||||
Parent taxa | ||||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | L. rivularis var. latifolius | |||||||||||||||||
Name authority | J. Agardh: Syn. Lupini, 18. (1835) | Kellogg: Proc. Calif. Acad. Sci. 7: 92. (1877) | ||||||||||||||||
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