Oxytropis borealis var. australis
Oxytropis borealis var. sulphurea
boreal locoweed
Beringian locoweed, boreal locoweed
4–17 cm;
leaflets 17–27, blades thick and stiff, apex usually obtuse to rounded.
4–25 cm;
leaflets 19–35, blades 4–18 mm.
usually 3–15-flowered, subcapitate to somewhat elongate.
8–25-flowered, compact to loose.
1–15 cm, longer than or subequal to leaves, axis 4.5–5 cm in fruit, pubescent.
4–20+ cm, axis often (2–)3–15 cm in fruit, pilose.
usually white or ochroleucous, keel tips maculate or not, rarely fading bluish, 15–18 mm;
wing blades not especially dilated distally.
white or bluish, keel tips maculate, 9–21 mm;
wing blades not especially dilated distally.
5–7 mm, tube 3–4 mm, lobes 1–3 mm, prominently tuberculate.
6–9 mm, tube 5–7 mm, lobes 2–4 mm, prominently tuberculate.
erect-ascending, 12–16 × 4–6 mm.
8–15 × 5–7 mm.
Oxytropis borealis var. australis
Oxytropis borealis var. sulphurea
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.)
There are many transitional forms between vars. sulphurea and viscida in the broad sense. The materials included here are plottable in the herbarium and notable in the field. Many of the plants are small-flowered (ca. 12 mm) and, consequently, have narrow racemes. Large-flowered phases are present and, in some, the bracts are very long, surpassing the flowers at anthesis.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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