Flora of North America species comparison

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

prostrate and radiating, 0–10 cm, internodes usually concealed by stipules, densely pannose-tomentose.

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.

1.5–12 cm;

stipules 3–10 mm, membranous;

leaflets 9–19, blades obovate or suborbiculate to ovate, 2–15 mm, apex usually obtuse to emarginate, sometimes acute, surfaces densely villous-tomentose.

(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.

2–8-flowered, flowers ascending;

axis 0.4–2.6 cm in fruit;

bracts 4–9 mm;

bracteoles 0–2.

narrowly ascending or incurved, 0.2–4 cm.

ascending, decumbent in fruit, 1–14 cm.

0.7–3.2 mm.

2–4.3 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.

23–31 mm;

calyx cylindric, 12–14 mm, villous-tomentose, tube 8.5–13 mm, lobes lanceolate-subulate, 2–4.5 mm;

corolla usually pink-purple, rarely white;

banner recurved through 45°;

keel (16–)17–22 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.

initially ascending (humistrate), color concealed by hairs, ± straight, lanceoloid-ellipsoid or narrowly ovoid-acuminate, obcompressed, 17–30 × 5.5–7.5 mm, unilocular, fleshy becoming stiffly papery or thinly leathery, shaggy-villous, hairs 4–8 mm, obscuring surface;

sessile and gynophore 1–2.5 mm.

3–9.

22–31.

= 16, 24.

= 22.