Flora of North America species comparison

usually erect or ascending, sometimes decumbent, rarely prostrate, usually sparsely strigulose, sometimes pilosulous.

slender, decumbent to incurved-ascending, strigulose.

2–9 cm;

stipules connate-sheathing and papery at proximal nodes, connate or distinct and herbaceous or submembranous at distal nodes, usually black or blackish when dry, 1.5–7 mm;

leaflets 11–21, blades narrowly oblong to elliptic, linear, oblanceolate, or obovate, 3–24 mm, apex acute to obtuse, mucronate, or emarginate, surfaces sparsely strigose abaxially, glabrous adaxially.

(2–)2.5–8.5 cm;

stipules: proximals connate-sheathing, bidentate scarious at proximal nodes, distinct or connate at base and subherbaceous at distal nodes, 2–5 mm;

leaflets 9–15, blades elliptic to ovate-elliptic, 2–8 mm, apex obtuse or subapiculate, surfaces strigulose.

(1–)3–23-flowered, often paired in leaf axils, flowers ascending;

axis 0.5–11 cm in fruit;

bracts 0.5–2.7 mm;

bracteoles 0–2.

5–10(–14)-flowered;

axis (1–)1.5–4 cm in fruit;

bracts 0.7–1.2 mm;

bracteoles 0.

narrowly ascending or incurved, 0.2–4 cm.

ascending to declined, 2–5.5 cm.

0.7–3.2 mm.

6–9(–11) mm;

calyx 2.6–5.2 mm, strigose, tube 2–2.7 mm, lobes subulate, 0.7–2.5 mm;

corolla usually white to ochroleucous, sometimes pink-purple;

banner recurved through 40°;

keel 4.3–5.7(–6.5) mm.

5–6 mm;

calyx 3.3–4 mm, strigose, hairs white or black, tube 2.1–2.7 mm, lobes subulate, 1–1.4 mm.

pendulous, green, often brown- or red-mottled, becoming brown or black, straight or curved, ellipsoid to oblong, laterally flattened, 7–16 × 2.5–4.5 mm, papery, usually glabrous, sometimes strigose;

stipe 0.6–6 mm.

pendulous (or humistrate), red-mottled, narrowly obovoid-ellipsoid, slightly dorsiventrally compressed, 8–14 × 4–6 mm, thin becoming papery-membranous, strigulose;

gynophore 0.5–1 mm.

3–9.

12–14(–16).

= 16, 24.