Flora of North America species comparison

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

decumbent to ascending, (0–)1–5 cm underground, 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.

(2.5–)4–13(–15) cm;

stipules (1.5–)2–7 mm, papery-scarious at proximal nodes, herbaceous at distal nodes;

leaflets (9–)15–21(–25), blades broadly to narrowly oblanceolate or elliptic-oblanceolate, (5–)10–25(–35) mm, apex obtuse, retuse, or truncate and apiculate or subacute, surfaces strigulose.

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

axis (2–)2.5–12(–17) cm in fruit;

bracts 1–3 mm.

(5–)8–18-flowered, flowers spreading;

axis (0.5–)1–3(–5) cm in fruit;

bracts 1.2–3 mm;

bracteoles 0–2.

erect, 2.5–13 cm.

incurved-ascending, reclined in fruit, (3–)4–8 cm.

0.8–4(–4.8) mm.

(0.8–)1–2.5(–3.5) 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.

13–17.6 mm;

calyx campanulate to short-cylindric, (6.4–)7–12(–13) mm, villosulous, tube (4.5–)4.8–6.3(–6.8) mm, lobes subulate, (1.8–)2.5–5.3(–6.2) mm;

corolla ochroleucous, immaculate;

banner strongly recurved through 50–75°;

keel 11.4–13.7 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.

ascending (humistrate), green or red-spotted becoming brownish stramineous, slightly incurved, obliquely oblong-ellipsoid, slightly obcompressed, (20–)25–35 × (7–)8–12 mm, unilocular or sub-bilocular, fleshy becoming stiffly leathery or woody, glabrous;

valves inflexed, septum 0–1.5 mm wide;

sessile.

42–71(–76).

20–26.