Flora of North America species comparison

erect or decumbent, solid, not succulent.

prostrate or decumbent to ascending or erect, glabrous or pubescent.

8–16 mm;

rachis 1.5–5 mm;

leaflet blades: basal 2 obliquely ovate, terminal 3 obovate to obovate-elliptic or obovate-lanceolate, 5–15 × 1–4 mm, length 3.2–5 times width, apex rounded to ± acute.

alternate, odd-pinnate;

stipules present, glandlike;

petiolate;

leaflets 5, proximal pair stipular in position, distal 3 ± palmate, blade margins entire, surfaces glabrous or pubescent.

1(or 2[–4]-flowered;

bracts 1–3-foliolate.

1–15-flowered, axillary, umbels or solitary flowers;

bracts present, 1–3-foliolate.

ascending, 1–4.5(–6) cm.

7–9.2[–10] mm;

calyx 4–6 mm, lobes erect in bud, triangular to deltate-acuminate, (1.5–)2–2.8[–3.5] mm, ± equaling tube, tube glabrate;

petals light yellow, ± pink-tinged abaxially, turning pinkish or red, 6.6–8.5 mm, wings equaling keel.

papilionaceous;

calyx symmetric, bell-shaped or short-cylindric, lobes 5;

corolla yellow, usually marked with red, (4–)5–13(–18) mm, keel equaling or longer than symmetrically positioned wings;

stamens 10, diadelphous;

anthers dorsifixed;

ovary sessile or ± stipitate;

stigma without collar.

legumes, persistent, exserted from calyx, sessile, straight, body not deflexed, linear to narrowly oblong or cylindric, subterete to quadrate, beak slender, dehiscent, leathery, glabrous.

brown, cylindric, 15–25[–35] × 2–3 mm, not septate.

6–10[–30], brown, finely mottled, globose, 0.8–1.4 mm, smooth.

(5–)10–35, mottled or not, globose to oblong or round-oblong.

= 6.

= 12.