Flora of North America species comparison

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

usually branched, densely glandular-verruculose, strigulose.

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.

1.4–4.5(–6) cm;

leaflets (9 or)11–23(–29), blades orbiculate-obcordate to oblong-ovate, 0.5–5(–7) mm, surfaces pubescent, gland-dotted abaxially.

sparsely flowered distally;

axis 2–10 cm;

bracts 1.5–3(–5.5) mm.

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

bracts present, caducous [persistent];

bracteoles absent.

(0.5–)1–5(–9.5) cm.

glandular basally, sometimes also apically.

0.3–0.5 mm.

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.

not nodding, usually separated by distinct intervals;

calyx (2.8–)3–4.3(–4.5) mm, loosely strigulose to hirsute, tube 1.6–2(–2.1) mm, rib intervals each with 5 or 6 glands, lobes ovate, unequal;

corolla usually bicolored;

banner whitish with yellowish eye, blue or bluish near margin, deltate-cordate to reniform, 2.8–4 mm; epistemonous petals blue proximally and pale distally, or blue-violet throughout;

wings ovate to oblong-ovate, 2.6–3.8 × 1.4–2 mm;

keel elliptic-obovate, 3.6–4.8 × 2.4–3.2 mm;

stamens (5–)5.5–7 mm;

filaments distinct to 2 mm;

anthers 0.5–0.8 mm.

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.

1.6–2 mm.

harp-shaped, 1.8–2.4 mm, puberulent, with arcs of glands distally.

= 10.

= 20.