Flora of North America species comparison

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

decumbent or ascending, hirsute or hirsutulous.

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–)4–14 cm;

stipules 5–10 mm, thinly herbaceous becoming papery-membranous;

leaflets (9–)15–27, blades broadly ovate, obcordate, obovate to broadly oblanceolate, or elliptic, 4–15 mm, apex usually obtuse, rarely acute, surfaces hirsutulous.

(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.

4–9-flowered, flowers loosely ascending;

axis 1–2.5 cm in fruit;

bracts 3.5–9 mm;

bracteoles 0–2.

erect or divaricate, 3–9(–12) cm.

incurved-ascending, 2–5.5 cm.

1–2.3 mm.

2.5–4 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.

15–22 mm;

calyx usually broadly campanulate, sometimes subcylindric, 9–12 mm, hirsute, tube 5–7 mm, lobes narrowly lanceolate, 4–5 mm;

corolla white, veins and keel tip pink;

banner recurved through 45°;

keel 12.4–16.2 mm.

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.

ascending or spreading, brownish, incurved through 0.2–0.5(–1) spiral, lunately lanceoloid, strongly obcompressed, (20–)25–30 × 6–8 mm, unilocular, fleshy becoming stiffly leathery or subligneous, densely hirsutulous.

32–42.

26–30.