Flora of North America species comparison

decumbent, trailing, erect, or ascending, mostly strigulose or villosulous, often glabrous or glabrate at proximal nodes.

procumbent to ascending, 2–8 cm underground, pilose.

5–16(–18) cm;

stipules distinct 1.5–6.5 mm, papery at proximal nodes, firm or submembranous at distal nodes;

leaflets (11 or)13–25, blades ovate, obovate, oblong-elliptic, elliptic, lanceolate-oblong, oblanceolate, or linear-oblong, 5–25(–30) mm, apex usually obtuse, retuse, or truncate and apiculate, rarely subacute, surfaces glabrous.

3–6.5 cm;

stipules 2–3 mm, papery-scarious;

leaflets 9–13, blades elliptic-oblanceolate or narrowly obovate-cuneate, (6–)8–13 mm, apex obtuse to subemarginate, surfaces pilose.

(10–)12–30(–35)-flowered, flowers subhorizontal or ascending;

axis (2–)2.5–12(–17) cm in fruit;

bracts 1–3 mm.

densely 7–17-flowered, flowers ascending-spreading;

axis 1–4 cm in fruit;

bracts 1.5–2 mm;

bracteoles 0.

erect, 2.5–13 cm.

erect or slightly spreading, 2–5 cm.

0.8–4(–4.8) mm.

1–1.5 mm.

(6.4–)7.8–13 mm;

calyx campanulate or ovoid-campanulate, 4–6.6 mm, strigulose, tube (2.5–)2.6–4.3 mm, lobes subulate, deltate, or triangular, 0.7–2.6 mm;

corolla ochroleucous, yellowish, or greenish white;

banner abruptly recurved through 60–90°, (6.4–)7.8–13 mm;

keel (6.2–)7.1–10.8 mm, apex narrowly deltate and triangular, subacute, somewhat beaklike.

10–11.5 mm;

calyx campanulate, 5.5–6 mm, loosely strigulose, tube 3.5–4.2 mm, lobes subulate, 1.6–2 mm;

corolla ochroleucous, immaculate;

banner recurved through 45°.

spreading or ascending (sometimes humistrate), pale green, sometimes purple-tinged or -speckled, becoming stramineous, obliquely ovoid, semi-ovoid or semi-ellipsoid, bladdery-inflated, somewhat obcompressed, 25–60 × 12–32 mm, beak prominent, papery, ± lustrous, usually strigulose, rarely glabrescent.

pendulous (humistrate), brown, sometimes purple-mottled, gently incurved, obliquely ellipsoid to oblanceoloid-ellipsoid, 3-sided compressed, 16–22 × 7–9 mm, unilocular, leathery, glabrous;

stipe 1–2 mm.

42–71(–76).

18–21.