Lupinus latifolius |
Lupinus malacophyllus |
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broad-leaf lupine |
jawleaf lupine |
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Habit | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | Herbs, annual, 0.7–1.6 dm, softly villous, with fine, spreading hairs, hairs more than 1 mm. | ||||||||||||||||
Stems | erect or spreading, branched or unbranched. |
ascending or erect, 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. |
basal and cauline; stipules well developed; petiole 1.5–4.5 cm; leaflets 5–7, blades 7–22 × 3–6 mm, adaxial surface softly villous. |
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Racemes | 16–60 cm; flowers whorled or spirally arranged. |
well exserted, several–many-flowered, 3–7 cm; flowers crowded, whorled proximally, becoming spirally arranged distally. |
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Peduncles | 8–20 cm; bracts deciduous, 8–12 mm. |
2–5.5 cm; bracts persistent, 5–7 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. |
8–10 mm; calyx 5–8 mm, lobes unequal, adaxial lobe less than 1/2 as long as abaxial; corolla blue or whitish and blue-tipped, keel glabrous. |
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Legumes | 2–4.5 cm, ± densely hairy. |
not obviously undulate, 1–1.3 cm, softly villous-pilose. |
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Cotyledons | deciduous, petiolate. |
persistent or deciduous, disclike, sessile, leaving a circular scar. |
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Seeds | 6–10, mottled dark brown, 3–4 mm. |
2. |
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Lupinus latifolius |
Lupinus malacophyllus |
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Phenology | Flowering spring–early summer (mid Apr–Jun). | |||||||||||||||||
Habitat | Colonial in openings among sagebrush on sandy or gravelly flats and foothill slopes. | |||||||||||||||||
Elevation | 1400–1800 m. [4600–5900 ft.] | |||||||||||||||||
Distribution |
w North America; nw Mexico
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NV |
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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 malacophyllus is known from Washoe and adjacent counties. (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 | |||||||||||||||||
Name authority | J. Agardh: Syn. Lupini, 18. (1835) | Greene: Pittonia 1: 215. (1888) | ||||||||||||||||
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