Flora of North America species comparison

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

prostrate or decumbent with ascending tips, 1.5–12+ cm underground, densely silky-villosulous.

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.

(0.7–)1–3 cm;

stipules mostly connate throughout, sometimes distinct at distal nodes, 1–3 mm, scarious at proximal nodes, herbaceous at distal nodes;

leaflets 9–13(or 15), blades oval, obovate-cuneate, or oblong-obovate, 2–8 mm, apex obtuse, surfaces villous abaxially, glabrous 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.

6–12-flowered;

axis 0.5–1.2 cm in fruit;

bracts 1.5–3 mm;

bracteoles 2.

narrowly ascending or incurved, 0.2–4 cm.

incurved-ascending, (1–)2–4.5 cm.

0.7–3.2 mm.

0.8–2 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.

10–13 mm;

calyx 4.8–6.6 mm, loosely villosulous, tube 3–4.6 mm, lobes broadly subulate, 1.2–2.1 mm;

corolla whitish, tinged with pinkish lavender, fading cream;

banner recurved through 50°;

keel 6.7–8 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.

spreading or ascending (sometimes humistrate), green or purplish-cheeked becoming stramineous, almost straight to incurved through 0.3 spiral, obliquely ovoid-acuminate or lanceoloid-ovoid, somewhat dorsiventrally compressed, 15–20 × 6–9 mm, ± bilocular, slightly fleshy becoming papery, shortly villosulous.

3–9.

18–28.

= 16, 24.

= 22.