Lupinus latifolius |
Lupinus sabineanus |
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broad-leaf lupine |
Sabin's lupine, Sabine's lupine |
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Habit | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | Herbs, perennial, (5–)6–12 dm, woody, hairs stiff to short-silky-appressed. | ||||||||||||||||
Stems | erect or spreading, branched or unbranched. |
erect or ascending, clustered, unbranched or branched distally, stout. |
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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 10–15 mm; petiole 2–25 cm; leaflets 8–11, blades (30–)60–120(–150) × 3–15 mm, abaxial surface silky, slightly less so abaxially. |
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Racemes | 16–60 cm; flowers whorled or spirally arranged. |
12–40 cm, loose to dense; flowers whorled. |
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Peduncles | 8–20 cm; bracts deciduous, 8–12 mm. |
4–10 cm; bracts early deciduous to persistent, 10–18 mm. |
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Pedicels | 2–12 mm. |
4–12 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. |
(13–)15–18 mm; calyx sometimes somewhat bulged and asymmetrical, abaxial lobe entire or notched, 7–8 mm, adaxial lobe shallowly notched, 6–7 mm; corolla bright yellow, rarely pale purple, keel falcate, banner glabrous or hairy abaxially, upper keel margins densely ciliate. |
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Legumes | 2–4.5 cm, ± densely hairy. |
3–4.5 cm, tomentose. |
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Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
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Seeds | 6–10, mottled dark brown, 3–4 mm. |
4–7, pinkish brown to dull reddish brown, 6–7 mm. |
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Lupinus latifolius |
Lupinus sabineanus |
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Phenology | Flowering May–early Jun. | |||||||||||||||||
Habitat | Open ponderosa pine forests, dry hillsides, open woods. | |||||||||||||||||
Elevation | 500–1200 m. [1600–3900 ft.] | |||||||||||||||||
Distribution |
w North America; nw Mexico
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OR; WA |
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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 sabineanus is known only from the Blue Mountains of northeastern Oregon and southeastern Washington (where it is of conservation concern). (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 | L. sabinei | ||||||||||||||||
Name authority | J. Agardh: Syn. Lupini, 18. (1835) | Douglas ex Lindley: Edwards’s Bot. Reg. 17: plate 1435. (1831) — (as sabinianus) | ||||||||||||||||
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