Flora of North America species comparison

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

obscured by stipules.

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.

0.6–2 cm;

stipules 3.5–7 mm, hyaline, glabrate or glabrous abaxially, ciliate;

leaflet blades spatulate to elliptic, 3–7.5 mm, apex acute, surfaces silvery-pilose.

(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.

2- or 3-flowered;

axis very short;

bracts 2–3 mm;

bracteoles 0.

narrowly ascending or incurved, 0.2–4 cm.

0.7–1.5 cm.

0.7–3.2 mm.

1–1.5 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.

(5.8–)6.6–8 mm;

calyx campanulate, 3.3–4.2 mm, densely pilose, tube 2.1–2.3 mm, lobes triangular-subulate, 1.2–2 mm;

corolla usually pink-purple, rarely white;

banner recurved through 90°, obovate-cuneate, (5.8–)6.6–8 mm;

wings (5.7–)6–6.8 mm;

keel 4.1–4.5 mm, apex bluntly deltate.

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.

ascending, ovoid-ellipsoid, slightly compressed, 4–5 × 1.2–2 mm, papery, densely silky-strigose or silky-pilose.

3–9.

6–10.

= 16, 24.