Flora of North America species comparison

erect to procumbent or decumbent, terete, pubescent.

10–50 cm.

alternate, odd-pinnate;

stipules present, distinct, dark-tipped, membranous;

petiolate;

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

30–60 × 10–15 mm;

stipules linear, 1 mm;

leaflets 15–37, blades elliptical to oblong-lanceolate, leaflets of larger leaves 5–9 × 2–3 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.

1.5–2 cm in flower, 4–6 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 3.5–4.3 mm, lobes 1.2–1.8 mm, more than 1/2 tube length;

corolla yellow, 5–8 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, 7–10 mm diam.;

bract equaling or longer than flowers, 7–9-foliolate.

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

hilum lateral.

2 × 1.5 mm.

weakly compressed, not or slightly constricted between seeds, 20–50 × 2–3 mm;

segments 5–8, oblong, 3.5–4 mm;

beaks ± curved, 3–7 mm.

= 7.

= 14.