Flora of North America species comparison

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

ascending (and somewhat sprawling from the root-crown) to erect, 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.

3.2–22 cm;

stipules 3–9 mm, membranous;

leaflets (1 or)3–13, blades elliptic to rhombic, 7–23(–45) mm, apex acute to mucronate, surfaces sparsely strigose or glabrous.

(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.

7–20-flowered, flowers spreading;

axis 1–3 cm in fruit;

bracts 2–4.5 mm;

bracteoles 0.

narrowly ascending or incurved, 0.2–4 cm.

incurved, 1.4–10 cm.

0.7–3.2 mm.

0.8–2.5 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.

17–19 mm;

calyx 6.7–10 mm, strigulose, tube 5.5–6.3 mm, lobes subulate, 1.8–3.1 mm;

corolla white, concolorous, drying white or ochroleucous;

banner recurved through 40–50°;

keel 13 mm, apex blunt.

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-declined, pallid-stramineous or brownish, straight or slightly incurved subcylindroid, inflated, 25–32(–38) × 10–15 mm, leathery, strigose;

unilocular;

sessile or subsessile.

3–9.

38–44.

= 16, 24.