Oxytropis lagopus |
Oxytropis kobukensis |
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hare oxytrope, haresfoot locoweed |
kobuk locoweed |
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Habit | Plants cespitose, appearing acaulescent, herbage silky-pilose. | Plants cespitose, clump-forming, appearing acaulescent; caudex branches elongate. | ||||||||
Leaves | 1–10 cm; stipules membranous, soon ruptured, light becoming dark in age, silky-pilose, margins ciliate; leaflets 5–17, scattered or congested, blades ovate-oblong to narrowly elliptic, 3–15 × 2–6 mm, apex acute or obtuse, surfaces pilose or sericeous. |
6–10 cm; stipules persistent, well separated, firm, rigid, usually purplish or becoming purplish, free ends long-attenuate, pilose abaxially, or glabrate on free ends, margins scarious and ciliate, with clavate processes; leaflets 13–17, blades lanceolate to lanceolate-oblong, 6–16(–18) × 2–3.5 mm, base rounded, margins involute, apex obtuse to acute, surfaces strigose to pilose abaxially, pilose to glabrate adaxially. |
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Racemes | (3–)5–18-flowered, subcapitate or slightly elongate. |
5–8-flowered. |
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Peduncles | 1–13 cm, axis 0.5–3(–4) cm in fruit, appressed-pilose to villous-hirsute; bract ovate-lanceolate to lanceolate, margins involute, shaggy-pilose. |
7–11 cm, strigose, hairs spreading, appressed; bract lanceolate, pilose, margins ciliate, with clavate processes. |
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Corollas | bright pink-purple or bluish purple, 15–19(–20) mm. |
blue or purplish, 16–18(–20) mm. |
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Calyces | deeply campanulate, villous to shaggy-villous, hairs mixed blackish and white, appearing gray, 2 mm; tube 5.5–7 mm, slightly swollen to strongly inflated, variably accrescent, ruptured by fruit or not, lobes 2–4.5 mm. |
purplish, short-cylindric to campanulate, minutely strigulose, hairs black and white; tube 5.8–7 mm, lobes 1.5–2.2 mm. |
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Legumes | enclosed in or exserted from calyx, erect, sessile or short-stipitate, ovoid to narrowly oblong, turgid to inflated, 6–15(–20) × 4–6.5 mm, bilocular, papery to nearly membranous, white- or black-villous. |
held aloft at maturity, spreading, sessile, cylindric, 12–17 × 5–7 mm (to 3 times longer than wide), bilocular or sub-bilocular, pilose, hairs black or black and white. |
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2n | = 80. |
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Oxytropis lagopus |
Oxytropis kobukensis |
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Phenology | Flowering summer. | |||||||||
Habitat | Sand dunes. | |||||||||
Elevation | 0–100 m. (0–300 ft.) | |||||||||
Distribution |
w North America
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AK |
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Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Oxytropis kobukensis is restricted to the Kobuk River area in western Alaska. (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 | ||||||||||
Name authority | Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 17. (1834) | S. L. Welsh: Iowa State J. Sci. 41: 286. (1967) | ||||||||
Web links |