Flora of North America species comparison

erect or decumbent to ascending, ± strongly flexuose aboveground, (0–)2–6 cm underground, strigulose.

ascending to erect or spreading-decumbent, diffuse, radiating, strigulose.

30–100 cm;

stipules (1–)2–5 mm, membranous at proximal nodes, herbaceous at distal nodes;

leaflets (5–)9–15, blades elliptic-oblong, oblanceolate, or linear, 3–25 mm, apex usually obtuse or retuse, rarely subacute, surfaces strigulose.

2–9 cm;

stipules distinct, 1–4.5 mm, papery at proximal nodes, herbaceous at distal nodes;

leaflets 5–15, blades oblong to ovate, obovate, or elliptic, 2–14 mm, apex obtuse to retuse, mucronate, or acute, surfaces villosulous.

(5–)8–20(–26)-flowered, flowers ascending becoming declined;

axis (1.5–)3–12(–17) cm in fruit, elongating;

bracts 2–3.5(–5) mm;

bracteoles 0–2.

3–12-flowered, flowers spreading;

axis 0.4–3.5 cm in fruit;

bracts 1–3 mm;

bracteoles 0.

erect or divaricate, 3–9(–12) cm.

incurved, 1–4 cm.

1–2.3 mm.

0.5–2 mm.

(12–)13.5–18 mm;

calyx pallid or purplish, cylindric or deeply campanulate, (5.8–)7.5–9 mm, strigulose, tube (4.6–)5.8–7.5 mm, lobes subulate or triangular-subulate, 1.2–1.8 mm;

corolla usually pink-purple and wing tips white, rarely white throughout;

keel 10.6–13.3 mm.

8.8–12.2 mm;

calyx campanulate, 4.8–6.3 mm, villosulous, tube 2.8–4.2 mm, lobes subulate, 1.8–2.8 mm;

corolla pink-purple or ochroleucous;

banner incurved through 90–110°;

keel 7.3–8.7 mm, apex bluntly triangular or deltate.

promptly deciduous, deflexed, red- or brownish-mottled becoming stramineous or brownish, usually ± sigmoid-arcuate, rarely straight, lanceoloid-ellipsoid or oblong-ellipsoid, obcompressed, 20–55 × (5–)6–10 mm, fleshy becoming stiffly leathery, strigulose.

deciduous from receptacle, spreading-declined, green or reddish becoming stramineous, incurved through 0.25–0.5 spiral, obliquely lanceoloid-ellipsoid, inflated, 12–20 × 4–8(–9) mm, thin becoming papery, shaggy-pilose, hairs lustrous, 1–2 mm.

32–42.

9–18.