Lupinus latifolius |
Lupinus kuschei |
|||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
broad-leaf lupine |
kusche's lupine, Yukon lupine |
|||||||||||||||||
Habit | Herbs, perennial, 3–24 dm, not fleshy, green, glabrous or hairy. | Herbs, perennial, 1.5–5(–6) dm, densely silky-sericeous. | ||||||||||||||||
Stems | erect or spreading, branched or unbranched. |
decumbent to erect, few to several-tufted, unbranched or branched. |
||||||||||||||||
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. |
mostly basal with 3 or 4 cauline; stipules not leaflike, green to silvery, 8–12 mm; basal petioles 4–7 cm, proximal cauline petioles 3.5–15 cm, distal ones 2–3.5 cm; leaflets 5–9, blades 15–70 × 3–8 mm, surfaces densely pubescent, adaxially less pubescent and greener. |
||||||||||||||||
Racemes | 16–60 cm; flowers whorled or spirally arranged. |
3–10(–12) cm; flowers in 3–6 whorls. |
||||||||||||||||
Peduncles | 8–20 cm; bracts deciduous, 8–12 mm. |
2.5–7(–13) cm; bracts subpersistent, 4–10 mm. |
||||||||||||||||
Pedicels | 2–12 mm. |
2–5(–7) mm. |
||||||||||||||||
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. |
10–13 mm; calyx slightly gibbous adaxially near base, bulge or spur 0–1 mm, abaxial lobe 3-lobed, 5–7 mm, adaxial lobe 2-lobed, 4–6 mm; corolla blue to purple, banner spot light yellow, banner with inconspicuous hairs abaxially, adaxial keel glabrous or with a few cilia along adaxial edges towards tip, keel upcurved. |
||||||||||||||||
Legumes | 2–4.5 cm, ± densely hairy. |
1.5–3 cm, silky-pilose. |
||||||||||||||||
Cotyledons | deciduous, petiolate. |
deciduous, petiolate. |
||||||||||||||||
Seeds | 6–10, mottled dark brown, 3–4 mm. |
4–6. |
||||||||||||||||
Lupinus latifolius |
Lupinus kuschei |
|||||||||||||||||
Phenology | Flowering Jun–Sep. | |||||||||||||||||
Habitat | Mesic to dry, sandy, gravelly, or rocky openings, lodgepole pine forests, alpine pumice fields. | |||||||||||||||||
Elevation | 80–2600 m. [260–8500 ft.] | |||||||||||||||||
Distribution |
w North America; nw Mexico
|
AK; BC; YT |
||||||||||||||||
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 kuschei is of conservation concern in Alaska; it is known from southern Alaska to northern British Columbia and the Yukon Territory. Lupinus kuschei may prove to be a hybrid between L. arcticus and L. sericeus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||||||||||
Key |
|
|||||||||||||||||
Source | FNA vol. 11. | FNA vol. 11. | ||||||||||||||||
Parent taxa | ||||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | L. rivularis var. latifolius | L. jacobandersonii, L. porsildianus, L. sericeus var. kuschei | ||||||||||||||||
Name authority | J. Agardh: Syn. Lupini, 18. (1835) | Eastwood: Leafl. W. Bot. 3: 170. (1942) | ||||||||||||||||
Web links |
|