Flora of North America species comparison

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

ascending or sprawling, sparsely strigulose.

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.

(6–)8–20 cm;

stipules connate-sheathing at proximal nodes, connate or distinct at distal nodes, 10–20 mm, thinly herbaceous or foliaceous becoming papery;

leaflet blades ovate to oblong or broadly elliptic, 10–45(–60) mm, apex obtuse and apiculate, surfaces strigulose abaxially, glabrous adaxially.

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

axis (2–)2.5–12(–17) cm in fruit;

bracts 1–3 mm.

10–20-flowered;

axis (1–)1.5–3.5 cm in fruit;

bracts 2–6 mm;

bracteoles 0.

erect, 2.5–13 cm.

1.5–8 cm.

0.8–4(–4.8) mm.

0.5–3 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.

11.5–13.5 mm;

calyx 5.2–6.5 mm, glabrate to sparsely strigulose, tube 3.5–4.2 mm, lobes subulate, 1.2–2.9 mm;

corolla keel 9.5–11 mm.

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.

brownish stramineous, (27–)30–37(–40) × 4–5 mm, fleshy becoming leathery, minutely strigulose;

stipe 2–3.5 mm.

42–71(–76).

= 16.