Flora of North America species comparison

erect to procumbent or decumbent, terete, pubescent.

5–30 cm.

alternate, odd-pinnate;

stipules present, distinct, dark-tipped, membranous;

petiolate;

leaflets 15–37, blade margins entire, surfaces pubescent.

10–40 × 5–10 mm;

stipules deltate, 1 mm;

leaflets 15–27, blades ovate, elliptic, or oblong, leaflets of larger leaves 3–6 × 1–3 mm.

pedunculate, 2–8-flowered, axillary, umbellate heads;

bracts present or absent, pinnate or unifoliolate and leaflike;

bracteoles 1–8, 0.5 mm, dark-tipped, membranous.

1–3 cm in flower, 2–5 cm in fruit.

0–1 mm.

papilionaceous;

calyx ± actinomorphic, tubular or campanulate, lobes 5;

corolla white, pink, or yellow [purple], keel obtuse, inconspicuous;

stamens 10, diadelphous;

anthers basifixed;

styles glabrous;

stigmas terminal.

calyx 2–2.5 mm, lobes 0.4–0.7 mm, 1/4–1/3 tube length;

corolla white or pink, sometimes with darker lines, 3–5 mm.

loments, stipitate, laterally compressed [terete], linear or curved, constricted between seeds or not, laterally dehiscent into indehiscent segments, segments oblong or elliptic oblong, reticulate-veined, pubescent.

3–8-flowered, 5 mm diam.;

bract equaling or longer than flowers, 5–9-foliolate.

3–9, compressed-orbicular to ellipsoid-orbicular, smooth;

hilum lateral.

1 × 1 mm.

compressed, constricted between seeds, 10–18(–25) × 1.5–2 mm;

segments 4–9, elliptic-oblong, 2–2.5 mm;

beaks straight, often hooked at tip, 1–3 mm.

= 7.

= 14.