Lupinus kuschei |
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kusche's lupine, Yukon lupine |
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Habit | Herbs, perennial, 1.5–5(–6) dm, densely silky-sericeous. |
Stems | decumbent to erect, few to several-tufted, unbranched or branched. |
Leaves | 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 | 3–10(–12) cm; flowers in 3–6 whorls. |
Peduncles | 2.5–7(–13) cm; bracts subpersistent, 4–10 mm. |
Pedicels | 2–5(–7) mm. |
Flowers | 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 | 1.5–3 cm, silky-pilose. |
Cotyledons | deciduous, petiolate. |
Seeds | 4–6. |
Lupinus kuschei |
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Phenology | Flowering Jun–Sep. |
Habitat | Mesic to dry, sandy, gravelly, or rocky openings, lodgepole pine forests, alpine pumice fields. |
Elevation | 80–2600 m. (300–8500 ft.) |
Distribution |
AK; BC; YT |
Discussion | 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.) |
Source | FNA vol. 11. |
Parent taxa | |
Sibling taxa | |
Synonyms | L. jacobandersonii, L. porsildianus, L. sericeus var. kuschei |
Name authority | Eastwood: Leafl. W. Bot. 3: 170. (1942) |
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