Flora of North America species comparison

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

erect or ascending, hollow, succulent.

alternate, odd-pinnate;

stipules present, glandlike;

petiolate;

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

10–34 mm;

rachis 3–10 mm;

leaflet blades ovate-elliptic to elliptic, 8–25 × 3–15 mm, length 1.4–2.4 times width, apex obtuse, often mucronate.

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

bracts present, 1–3-foliolate.

(4 or)5–15-flowered;

bracts (1–)3-foliolate.

ascending to declined, 0.7–10(–15) cm.

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.

10–14(–20) mm;

calyx 4.5–8 mm, lobes spreading or recurved in bud, triangular, (1.5–)2.2–3.5 mm, shorter, ± equaling to slightly longer than tube, tube glabrate to pilose;

petals yellow, often mottled with red, darkening, 8–13(–18) mm, wings equaling keel.

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, (10–)15–35 × 1.5–2.5 mm, not septate.

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

15–35, yellowish, olive green, or yellowish brown, not or sometimes mottled, globose to round-oblong, 0.8–1.4 mm, smooth.

= 6.

= 12.