Lupinus latifolius |
Lupinus westianus |
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broad-leaf lupine |
Gulf Coast lupine |
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Habit | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | Herbs, biennial or perennial, 3–5 dm, hairs short-appressed, velvety to shaggy. | ||||||||||||||||||||
Stems | erect or spreading, branched or unbranched. |
spreading-ascending, clustered, robust, branched or 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 abortive or early deciduous (occurring only on very new growth), 9–15 mm; petiole 2–3.5 cm; leaflet 1, blades 30–70 × 15–25 mm, surfaces short-appressed, velvety to satiny sericeous. |
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Racemes | 16–60 cm; flowers whorled or spirally arranged. |
4–25 cm; flowers whorled. |
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Peduncles | 8–20 cm; bracts deciduous, 8–12 mm. |
2.5–6.5 cm; bracts deciduous, 4–7 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. |
11–14 mm; calyx abaxial lobe ovate, 2-lobed, 8–12 mm, adaxial lobe lanceolate, entire or obscurely 3-lobed, 5–10 mm; corolla pink or rose to blue, banner spot maroon to dark blue, banner glabrous abaxially, keel glabrous. |
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Legumes | 2–4.5 cm, ± densely hairy. |
1.5–2.5 cm, villous. |
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Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
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Seeds | 6–10, mottled dark brown, 3–4 mm. |
2–4. |
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Lupinus latifolius |
Lupinus westianus |
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Distribution |
w North America; nw Mexico
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Florida |
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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.) |
Varieties 2 (2 in the flora). (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 | ||||||||||||||||||||||
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Synonyms | L. rivularis var. latifolius | |||||||||||||||||||||
Name authority | J. Agardh: Syn. Lupini, 18. (1835) | Small: Torreya 26: 91. (1926) | ||||||||||||||||||||
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