Lupinus latifolius |
Lupinus arizonicus |
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broad-leaf lupine |
Arizona lupine |
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Habit | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | Herbs, annual, 1–6 dm, with short-appressed and long, spreading hairs. | ||||||||||||||||
Stems | erect or spreading, branched or unbranched. |
erect, usually branched, sometimes 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; petiole 2–8 cm; leaflets 5–10, blades 10–40 × 4–12 mm, adaxial surface glabrous. |
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Racemes | 16–60 cm; flowers whorled or spirally arranged. |
6–30 cm; flowers spirally arranged or appearing ± whorled proximally. |
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Peduncles | 8–20 cm; bracts deciduous, 8–12 mm. |
1–6 cm; bracts usually persistent, 4–8 mm. |
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Pedicels | 2–12 mm. |
2–4 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. |
7–10 mm; calyx 3–6 mm, lobes ± equal, abaxial lobe entire, adaxial lobe deeply cleft; corolla banner and wings dark pink to magenta, drying blue-purple or whitish, banner spot yellowish, becoming darker magenta, lower keel margins ciliate near claw, upper margins glabrous. |
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Legumes | 2–4.5 cm, ± densely hairy. |
often secund, 1–2 cm, coarsely pubescent. |
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Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
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Seeds | 6–10, mottled dark brown, 3–4 mm. |
4–6. |
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2n | = 48. |
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Lupinus latifolius |
Lupinus arizonicus |
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Phenology | Flowering spring. | |||||||||||||||||
Habitat | Sandy washes, open areas. | |||||||||||||||||
Elevation | 0–1100 m. [0–3600 ft.] | |||||||||||||||||
Distribution |
w North America; nw Mexico
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AZ; CA; NV; Mexico (Baja California, Baja California Sur, Sonora)
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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 arizonicus occurs in the eastern Mojave and Sonora deserts of southeastern California, southwestern Arizona, and southern Nevada, plus adjacent areas in northern Mexico. Robust plants have been named var. barbatulus. (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. concinnus var. arizonicus, L. arizonicus var. barbatulus, L. brevior, L. concinnus var. brevior, L. sparsiflorus var. arizonicus, L. sparsiflorus var. barbatulus | ||||||||||||||||
Name authority | J. Agardh: Syn. Lupini, 18. (1835) | (S. Watson) S. Watson: Proc. Amer. Acad. Arts 12: 250. (1877) | ||||||||||||||||
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