Flora of North America species comparison

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

few, erect or ascending, strigulose, cinereous.

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.

4.5–8.5 cm;

stipules distinct, 1–2.5 mm, submembranous;

leaflets 7–11, blades lanceolate, oblong, or narrowly oblong-elliptic, 8–16 mm, apex obtuse or truncate, surfaces strigulose abaxially, glabrescent adaxially.

(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.

4–7-flowered, flowers ascending becoming declined;

axis 1.5–3 cm in fruit;

bracts 1.5 mm;

bracteoles 0.

narrowly ascending or incurved, 0.2–4 cm.

ascending or incurved, 1.5–2 cm.

0.7–3.2 mm.

1–2 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.

6–6.3 mm;

calyx campanulate, 4 mm, strigulose, tube 2.1–2.3 mm, lobes subulate, 1.8–2 mm;

corolla whitish faintly lined pink;

banner recurved through 80°;

keel 4.3–4.4 mm, apex bluntly deltate, obscurely beaklike.

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.

spreading to declined, pale green and faintly brown-mottled, becoming stramineous, straight, subsymmetrically ovoid or ovoid-ellipsoid, bladdery-inflated, slightly obcompressed, 20–27 × 11–15 mm, thin, lustrous, finely strigulose, hairs straight, appressed;

seed-bearing flange 3–3.5 mm wide.

3–9.

28–30.

= 16, 24.