Plants perennial, (10–)20–80 cm. Stems decumbent or weakly ascending, flexuous or zigzag in age, glabrous or glabrate. Leaves 5–15 cm; leaflets 15–21(–25), blades broadly oblong-elliptic, ovate-oblong, or sub­orbiculate, 5–20(–25) mm, apex rounded, truncate, or retuse. Peduncles (2–)3–10 cm. Racemes shortly (8–)10–25-flowered, compact in fruit; axis little elongating, 1.5–4(–5) cm in fruit. Flowers (12.5–)13.2–20 mm; calyx 7.5–10.8 mm, tube (4.5–)5–7.5 mm, lobes (2.5–)3–5 mm; corolla purple or pale pink-purple. Legumes mottled, obliquely ovoid or semi-ovoid, ± strongly inflated, 13–25(–30) × 6.5–14 mm, ± bilocular, stiffly papery, glabrous; beak 5–8 mm, unilocular. Seeds 20–33.

Phenology: Flowering Jun–Sep.
Habitat: Openings in ponderosa pine for­ests.
Elevation: 2100–2500 m.

Distribution

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Ariz.

Discussion

Variety oropedii is locally common but apparently confined to the Kaibab Plateau, especially the North Rim and upper levels of the northern wall of the Grand Canyon in Coconino County. Specimens with thin-textured, subdiaphanous fruits that occur within or near known localities of var. oropedii have been tentatively placed with var. vitreus.

Selected References

None.

Lower Taxa

None.