Flora of North America species comparison

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

prostrate, when developed, 0–2.5 cm, mostly obscured by stipules, 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.

1.5–9 cm;

stipules connate-sheathing at proximal nodes, connate or distinct at distal nodes, 2–5 cm, membranous;

leaflets 5–17, blades elliptic, oblanceolate, or obovate, 3–12 mm, apex acute to obtuse, surfaces strigose.

(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.

4–13-flowered, flowers ascending or spreading;

axis 1.5–8 cm in fruit;

bracts 2–4.5 mm;

bracteoles 0.

narrowly ascending or incurved, 0.2–4 cm.

erect, 2–9 cm.

0.7–3.2 mm.

0.5–2 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.

12–16 mm;

calyx cylindric, 6–8.5 mm, strigose, tube 4.5–6 mm, lobes subulate, 1.2–2.5 mm;

corolla purplish;

keel 9.5–12.5 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.

declined to deflexed, green, usually red-mottled or -spotted, becoming stramineous, lunately incurved, obliquely ovoid or lanceoloid-ellipsoid, dorsiventrally compressed, 10–14 × 3.5–6.5 mm, unilocular or subunilocular, thickly papery, hirsute, hairs lustrous;

sessile, gynophore 0.3–0.8 mm.

3–9.

20.

= 16, 24.