Lupinus latifolius |
Lupinus obtusilobus |
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broad-leaf lupine |
bluntlobe lupine, ornate lupine, satin lupine |
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Habit | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | Herbs, perennial, 1.5–3 dm, appressed-silvery-silky; with woody, branching root crown. | ||||||||||||||||
Stems | erect or spreading, branched or unbranched. |
decumbent, ascending, or erect, clustered, usually unbranched. |
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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; stipules 7–14 mm; petiole 2–5 cm; leaflets 6 or 7, blades 20–50 × 4–8 mm, adaxial surface hairs silvery-silky. |
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Racemes | 16–60 cm; flowers whorled or spirally arranged. |
dense, 3–7 cm; flowers ± whorled. |
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Peduncles | 8–20 cm; bracts deciduous, 8–12 mm. |
(1–)2–4(–5) cm; bracts 3–4 mm. |
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Pedicels | 2–12 mm. |
2–5 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. |
11–13 mm; calyx 6–7 mm, bulge or spur 0–1 mm, abaxial lobe 3-toothed, adaxial lobe 2-toothed; corolla blue to lilac, banner patch yellow, banner well reflexed-recurved at or proximal to midpoint, this 3.5–6 mm proximal to apex, banner broader than long, hairy abaxially, lower keel margins glabrous, adaxial margin ciliate. |
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Legumes | 2–4.5 cm, ± densely hairy. |
2.5–4 cm, silky. |
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Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
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Seeds | 6–10, mottled dark brown, 3–4 mm. |
4–5, mottled brown, 3–4 mm. |
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Lupinus latifolius |
Lupinus obtusilobus |
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Phenology | Flowering Jun–Sep. | |||||||||||||||||
Habitat | Gravelly summits, red fir, subalpine forests. | |||||||||||||||||
Elevation | 1500–3500 m. [4900–11500 ft.] | |||||||||||||||||
Distribution |
w North America; nw Mexico
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CA; NV
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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 obtusilobus is known in California from the North Coast Ranges, Klamath Ranges, Cascade Ranges, and northern Sierra Nevada (south to Nevada County), and in the Carson Range in eastern California and western Nevada. (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 | L. ornatus var. obtusilobus | ||||||||||||||||
Name authority | J. Agardh: Syn. Lupini, 18. (1835) | A. Heller: Muhlenbergia 8: 115, fig. 22. (1912) | ||||||||||||||||
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