Flora of North America species comparison

erect or decumbent, glabrous or pubescent (trichomes stiff, short, not spirally twisted).

alternate, usually odd-pinnate, rarely unifoliolate;

stipules present, caducous or persistent, deltate, ovate, or subulate;

petiolate;

leaflets 1–25(–29)[–45], stipels absent, blades with pale sinuous lines and single gland between petiolules, margins entire or glandular-crenulate, surfaces lineolate, with pale, sinuous, ascending lines, usually glandular-punctate abaxially, usually pubescent, sometimes glabrous.

(1–)5–75-flowered, terminal or leaf-opposed, racemes;

bracts present, caducous [persistent];

bracteoles absent.

glandular basally, sometimes also apically.

papilionaceous;

calyx campanulate, lobes 5, ribs 10, not anastomosing distally into closed arches, intervals between ribs membranous, glandular;

corolla white, lilac, blue, blue-violet, or purple, often bicolored;

banner claw reflexed to 90°;

wings and keel epistemonous, arising from apex of stamen tube or laterally from it;

wings not adnate to keel;

keel blades usually narrowly overlapping and adherent;

stamens [5 or 9]10, monadelphous, ± equal;

anthers dorsifixed;

ovule 1.

loments, mostly tan, stipitate, compressed [plump], obovoid, obliquely obovoid, or harp-shaped [obliquely obdeltoid], indehiscent, pericarp membranous or papery, glandular, glabrous or pilosulous.

1, tan to purplish or greenish, somewhat compressed, reniform.

= 10.