Flora of North America species comparison

petiolate;

stipules deciduous, 0.5–2 mm;

petiole 1–5 mm;

leaflets 3, blades oblanceolate to obovate, 10–15 mm, base cuneate, margins ciliolate, apex obtuse and mucronate, surfaces sericeous abaxially, glabrous adaxially.

often caducous, alternate or opposite, unifoliolate or odd-pinnate;

stipules present [absent], inconspicuous, adnate to leaf bases;

sessile or petiolate;

leaflets 1 or 3, blade margins entire, surfaces glabrous or pubescent.

4–10-flowered, axillary, clustered on short shoots, dense, 15–60 mm;

bracts caducous, narrowly linear, 2–3 mm.

1–20[–30]-flowered, terminal or axillary, clusters or racemes [panicles], or flowers solitary;

bracts present.

1–3 mm.

calyx 5–7 mm, sericeous;

banner ovate, 10–15 mm, glabrous;

wings and keel slightly shorter than banner, wings glabrous, keel tomentose abaxially and distally.

papilionaceous;

calyx tubular-campanulate, bilabiate, abaxial lip 3-lobed, adaxial lip 2-lobed;

corolla yellow, petals clawed;

stamens 10, monadelphous;

anthers basifixed, dimorphic;

ovary sessile, style abruptly incurved distally, glabrous.

legumes, stipitate, compressed, narrowly oblong [falcate-rhomboid and inflated], dehiscent, not constricted between seeds, usually pubescent, rarely glabrous.

oblong, 15–25 mm, densely sericeous.

(3–)5–7(–10), tan to dark brown, ovoid, 1–1.3 mm;

hilum greenish yellow.

3–10, ovoid, cordate, ellipsoid, rhombic, or orbicular, strophiolate.

= 24.

= 44, 46, 48.