Oxytropis borealis var. australis
Oxytropis borealis var. hudsonica
boreal locoweed
Hudson bay locoweed
4–17 cm;
leaflets 17–27, blades thick and stiff, apex usually obtuse to rounded.
mostly 1.5–8 cm;
leaflets 19–33, blades 1.5–6 mm.
usually 3–15-flowered, subcapitate to somewhat elongate.
densely 3–6(–16)-flowered, subcapitate to short-spicate.
1–15 cm, longer than or subequal to leaves, axis 4.5–5 cm in fruit, pubescent.
2.5–7 cm, axis to 1 cm in fruit, sparsely villous-pilose.
usually white or ochroleucous, keel tips maculate or not, rarely fading bluish, 15–18 mm;
wing blades not especially dilated distally.
purplish, 11–16 mm;
wing blades not especially dilated distally.
5–7 mm, tube 3–4 mm, lobes 1–3 mm, prominently tuberculate.
7.5–8 mm, tube 6–6.5 mm, lobes 1–1.5 mm, not or obscurely verrucose.
erect-ascending, 12–16 × 4–6 mm.
8–15 × 5–7 mm.
= 16.
Oxytropis borealis var. australis
Oxytropis borealis var. hudsonica
Variety australis is restricted to Emery, Sevier, and Wayne counties, Utah, Elko and Nye counties, Nevada, and Inyo and Mono counties, California.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Variety hudsonica is closely allied to, and transitional with, var. viscida, from which it differs mainly in the usually smaller size, relatively short calyx lobes, and less marked glandularity. None of these characters is definitive in all instances, either alone or in combination.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
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