Lupinus sulphureus |
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Kincaid's lupine, sulfur lupine, sulphur lupine |
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Habit | Herbs, perennial, (3–)4–8(–10) dm, hairs stiff to silky-appressed, whitish, grayish, or brownish. | ||||
Stems | erect, densely tufted, unbranched distally. |
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Leaves | basal and cauline, persisting until after flowering; stipules 4–8 mm; proximal petioles 4–20 cm, distal ones 1.5–5 cm; leaflets 6–15, blades white to greenish, (20–)25–70 × 4–10 mm, abaxial surface hairy-strigulose or sericeous, adaxial surface strigulose-silky to sparsely hairy or glabrous. |
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Racemes | 6–20 cm; flowers whorled or spirally arranged. |
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Peduncles | 2.5–6 cm; bracts tardily deciduous, 5–9 mm. |
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Pedicels | (2–)4–10 mm. |
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Flowers | 8–12 mm; calyx asymmetrical but not spurred, silky, abaxial lobe entire, 4–7 mm, adaxial lobe 2-fid, 3–5 mm; corolla pale sulfur yellow, blue, or white, banner glabrous or sparsely hairy abaxially (pubescence extending above calyx as a line), upper keel margins usually ciliate most of length, sometimes glabrous. |
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Legumes | 2–3 cm, pilose to silky. |
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Cotyledons | deciduous, petiolate. |
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Seeds | 4 or 5, pinkish brown. |
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Lupinus sulphureus |
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Distribution |
w North America
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Discussion | 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. | ||||
Parent taxa | |||||
Sibling taxa | |||||
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Name authority | Douglas in W. J. Hooker: Fl. Bor.-Amer. 1: 166. (1832) | ||||
Web links |