Lupinus sparsiflorus |
Lupinus latifolius |
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Coulter's lupine, Mojave lupine |
broad-leaf lupine |
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Habit | Herbs, annual, 1.5–4 dm, strigose, hairs short and appressed, also pilose, hairs long and spreading. | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | ||||||||||||||||
Stems | ascending or erect, branched or unbranched. |
erect or spreading, branched or unbranched. |
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Leaves | cauline; petiole (1–)3–7 cm; leaflets (5–)7–11, blades (7–)15–30(–45) × 2–5 mm, adaxial surface glabrous or pubescent, at least marginally. |
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. |
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Racemes | 10–25 cm; flowers spirally arranged. |
16–60 cm; flowers whorled or spirally arranged. |
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Peduncles | 2–4 cm; bracts usually deciduous, 3–5 mm, shorter than buds. |
8–20 cm; bracts deciduous, 8–12 mm. |
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Pedicels | 2–5 mm. |
2–12 mm. |
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Flowers | 10–12(–13) mm; calyx 3–6 mm, lobes ± equal, abaxial lobe entire, adaxial lobe deeply cleft; corolla usually blue, rarely pinkish, drying darker, banner spot whitish becoming magenta, lower keel margins ciliate near claw, upper margins often ciliate near claw. |
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. |
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Legumes | 1–2 cm, coarsely pubescent. |
2–4.5 cm, ± densely hairy. |
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Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
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Seeds | 4 or 5. |
6–10, mottled dark brown, 3–4 mm. |
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Lupinus sparsiflorus |
Lupinus latifolius |
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Phenology | Flowering spring (Mar–May). | |||||||||||||||||
Habitat | Washes, sandy areas, chaparral, grasslands, coastal sage scrub, Joshua tree/mesquite woodlands, creosote bush scrub. | |||||||||||||||||
Elevation | 0–1500 m. (0–4900 ft.) | |||||||||||||||||
Distribution |
AZ; CA; NV; UT; Mexico (Baja California, Baja California Sur, Sonora)
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w North America; nw Mexico
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Discussion | Plants from the Mojave Desert often have smaller flowers and have been named subsp. mohavensis, and those from western San Diego County with pinkish flowers and truncate leaflets have been named var. inopinatus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
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Key |
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Source | FNA vol. 11. | FNA vol. 11. | ||||||||||||||||
Parent taxa | Fabaceae > subfam. Faboideae > Lupinus | Fabaceae > subfam. Faboideae > Lupinus | ||||||||||||||||
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Subordinate taxa | ||||||||||||||||||
Synonyms | L. pondii, L. sparsiflorus subsp. inopinatus, L. sparsiflorus var. inopinatus, L. sparsiflorus subsp. mohavensis, L. sparsiflorus var. mohavensis, L. sparsiflorus var. pondii | L. rivularis var. latifolius | ||||||||||||||||
Name authority | Bentham: Pl. Hartw., 303. (1849) | J. Agardh: Syn. Lupini, 18. (1835) | ||||||||||||||||
Web links |
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