Flora of North America species comparison

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

decumbent to ascending, proximal internodes greatly shortened, 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.

(3–)5–12 cm;

stipules obscuring proximal internodes, 3–6 mm, papery-membranous at proximal nodes;

leaflet blades lanceolate-oblong, oblong, or oblong-elliptic, 6–22 mm, apex emarginate or retuse, surfaces villosulous, sometimes 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.

7–15-flowered;

axis 1.5–7.5 cm in fruit;

bracts 1.5–3.3 mm;

bracteoles (0–)2.

narrowly ascending or incurved, 0.2–4 cm.

incurved-ascending, 4.5–15 cm.

0.7–3.2 mm.

ascending, 1.5–3.3 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.

13.8–19.3 mm;

calyx 6–9.4 mm, villosulous, tube 4.2–5.5 mm, lobes subulate, 1.7–4 mm;

corolla whitish, drying ochroleucous or yellowish;

keel 9.5–12.3 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 (humistrate), brownish stramineous, oblong-ovoid or semi-ovoid, 10–25 × (4–)4.5–12 mm, fleshy becoming leathery or woody, glabrous or loosely strigulose;

stipe 5–12 mm.

3–9.

= 16, 24.