Stems (10–)20–50(–70) cm. Leaflets 0 or 3–11, blades 2–25(–33) mm. Bracteoles 0. Ped­icels 1–5 mm. Flowers 8–11 mm; calyx 4.2–6 mm, tube 3.4–4.8 mm, lobes 0.4–1.4 mm. Legumes linear, 25–50(–53) × 2.5–3.3(–4.2) mm, length 8–18 times width, gradually or abruptly contracted to ± symmetric apex. Seeds 13–20.

Phenology: Flowering May–Aug.
Habitat: Mixed desert shrub, sagebrush, pinyon-juniper, mountain brush, ponderosa pine, and aspen communities.
Elevation: (1200–)1400–2900 m.

Distribution

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Ariz., Colo., Idaho, Mont., Nev., Utah, Wyo.

Discussion

Variety convallarius demonstrates considerable vari­ability in presence or absence of leaflets, length of fruits, shape and length of calyx-lobes, pubescence coloration in the inflorescences, and degree of development of the stipelike bases of the fruits. Various combinations of these features in the past have resulted in recognition of several taxa. R. C. Barneby (1947c) detailed and sum­marized variation in the complex.

Selected References

None.

Lower Taxa

None.