Lupinus latifolius |
Lupinus kingii |
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broad-leaf lupine |
King's lupine |
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Habit | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | Herbs, annual, 1–2.5(–4) dm, pilose, hairs soft, flexuous, more than 1 mm. | ||||||||||||||||
Stems | erect or spreading, branched or unbranched. |
ascending or 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; stipules well developed; petiole 1.3–3.3 cm; leaflets (3 or)4–7, blades 7–20(–24) × 3–5 mm, adaxial surface pubescent. |
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Racemes | 16–60 cm; flowers whorled or spirally arranged. |
dense, several-flowered, 1–3 cm; flowers spirally arranged. |
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Peduncles | 8–20 cm; bracts deciduous, 8–12 mm. |
(1–)3–6 cm; bracts persistent, 3–4 mm. |
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Pedicels | 2–12 mm. |
0.8–2 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. |
5–9 mm; calyx 7–8 mm, adaxial lobe more than 1/2 as long as abaxial; corolla usually blue with pale banner patch, sometimes entirely white, keel glabrous. |
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Legumes | 2–4.5 cm, ± densely hairy. |
not obviously undulate, 0.9–1.3 cm, sparsely or densely pilose. |
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Cotyledons | deciduous, petiolate. |
persistent on young plants, becoming dry and deciduous, sessile. |
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Seeds | 6–10, mottled dark brown, 3–4 mm. |
2. |
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Lupinus latifolius |
Lupinus kingii |
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Phenology | Flowering late spring–summer (late May–Aug). | |||||||||||||||||
Habitat | Dry open places in ponderosa pine forests, pine-oak transition and upper edge of pinyon-juniper woodland. | |||||||||||||||||
Elevation | 1200–3000 m. [3900–9800 ft.] | |||||||||||||||||
Distribution |
w North America; nw Mexico
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AZ; CO; NM; NV; UT; WY
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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.) |
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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. argillaceus, L. capitatus, L. kingii var. argillaceus, L. sileri | ||||||||||||||||
Name authority | J. Agardh: Syn. Lupini, 18. (1835) | S. Watson: Proc. Amer. Acad. Arts 8: 534. (1873) | ||||||||||||||||
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