Flora of North America species comparison

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

obscured by stipules and leaf bases, sometimes shortly elongating following anthesis.

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.

0.5–8 cm;

stipules distinct at proximal nodes, connate at distal nodes, (2–)3–5 mm, membranous;

leaflets (3 or)5 or 7, blades oblanceolate to linear-oblanceolate or linear-elliptic, (2–)5–12 mm, apex obtuse or acute, surfaces ashen-strigulose.

(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.

1-flowered, flowers erect;

bracts 2.5 mm;

bracteoles 0.

narrowly ascending or incurved, 0.2–4 cm.

obsolete.

0.7–3.2 mm.

obsolete.

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.

14–18(–21) mm;

calyx cylindric, 8–10 mm, strigulose to subglabrous, tube 6–6.7 mm, lobes linear-subulate, 2–3.3 mm;

corolla bright pink-purple, keel maculate;

banner recurved to 20°;

keel 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.

erect, green, straight, inversely plumply pyriform, subglobose, subterete, 3 × 3 mm, thinly fleshy becoming papery, strigulose.

3–9.

7 or 8.

= 16, 24.

= 22.