Flora of North America species comparison

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.

petiolate;

stipules persistent, 1.5–6 mm;

petiole 5–10 mm;

leaflets 3, blades obovate to oblanceolate or elliptic, 5–25 mm, base tapering to cuneate, apex obtuse to rounded, often mucronate, surfaces densely pubescent abaxially, sparsely lanate adaxially.

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

bracts present.

3–20-flowered, terminal, racemes, 15–70 mm;

bracts 1–2.5 mm.

2–4 mm.

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.

calyx 4–8 mm, densely sericeous;

banner widely ovate, 9–16 mm, glabrous;

wings and keel slightly shorter than banner, wings glabrous, keel pubescent abaxially.

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

narrowly oblong, 20–40 mm, sericeous.

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

3–6(–10), olive to brownish or black, orbicular, 2.5–3 mm;

hilum red-orange.

= 24.