Flora of North America species comparison

pale green, twigs moderately pubescent.

stipules not spinescent;

petiole 1.6–3.5 mm, pubescent;

pinnae 2;

petiolules 0.2 mm, densely pubescent;

rachillas 3–7 mm, not winged, with glandular patches on adaxial side, not surrounding leaflet pulvini;

leaflets (4 or)6(or 8), opposite, blades elliptic to obovate, 3–7 × 1.6–3 mm, base cuneate to rounded, apex truncate to rounded, not apiculate, surfaces sparsely pubescent abaxially, sparsely pubescent to glabrate adaxially.

2–10-flowered, axis 1.1–3.5 cm, strigulose to glabrate;

bracts lanceolate, 0.3–0.4 × 0.2–0.3 mm;

bracteoles caducous.

10–14 mm, sparsely pubescent or glabrate, joints 1–3 mm from flower, bearded, rarely glabrous, usually nearer flower than pedicel base, rarely nearer pedicel base than flower.

calyx lobes sparsely pubescent abaxially, glabrous adaxially;

corolla 8–16 mm diam., petals deep yellow, adaxial one sometimes orange-dotted basally;

ovary glabrate.

compressed, not constricted between seeds, 3.8–12 × 1–1.3 cm, glabrescent.

1 or 2(–4).

= 28.