Flora of North America species comparison

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

rarely 2, 0–2 cm, internodes concealed by stipules.

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.

1–7(–12) cm;

stipules 1.5–6 mm, submembranous becoming papery;

leaflet blades obovate, oblanceolate, or elliptic, 2–19 mm, apex obtuse to acute, surfaces silvery-strigose.

(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.

(1 or)2–7(or 8)-flowered;

axis 0.2–2(–2.5) cm in fruit;

bracts 0.5–2 mm;

bracteoles 0 or 1, minute.

erect or divaricate, 3–9(–12) cm.

scapelike, ascending, 1–7+ cm.

1–2.3 mm.

0.7–3 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.

7.4–11.6(–12.7) mm;

calyx 5–10.6 mm, strigose, tube 4–6.4(–6.7) mm, lobes subulate, 1–4.2 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.

brown, usually straight or slightly incurved, 8–25 × 3–4.5 mm, thin becoming papery, strigose.

32–42.