Flora of North America species comparison

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

erect or ascending, fistulose, white and villous-tomentulose.

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–)4–16 cm;

stipules 3–10 mm, submembranous becoming papery;

leaflet blades oblong-ovate or -obovate to lanceolate-elliptic, 3–20 mm, apex acute, obtuse and apiculate, or apiculate, surfaces villous-tomentulose.

(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.

35–60-flowered;

axis 3.5–10(–14) cm in fruit;

bracts 2.5–5 mm;

bracteoles 0.

narrowly ascending or incurved, 0.2–4 cm.

spreading or incurved-ascending, 2.5–9 cm.

0.7–3.2 mm.

0.5–1.5 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.

9.1–11.7 mm;

calyx 6.2–8.1 mm, villous-villosulous, tube 3.3–4.1 mm, lobes lanceolate-acuminate to caudate, 2.5–5(–6) mm;

corolla keel 6.4–8.5 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.

stramineous, 6.5–9 × (2.5–)3–4 mm, thinly fleshy becoming stiffly papery, villous or villous-tomentulose;

gynophore 0.5–0.7 mm.

3–9.

= 16, 24.