Flora of North America species comparison

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

erect-ascending, 1–7 cm, internodes mostly concealed by imbricate stipules and marcescent leaf remains, 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–)5–17 cm;

stipules 2–7 mm, submembranous;

leaflets 7–19(–23), blades obovate, ovate, elliptic, or suborbiculate, 3–21 mm, apex usually obtuse or retuse and mucronate, rarely abruptly cuspidate-acuminate, surfaces strigose or glabrous 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.

1–7(or 8)-flowered, flowers ascending;

axis 0.2–2.5 cm in fruit;

bracts 2–5 mm;

bracteoles 0–2.

erect, 2.5–13 cm.

0.5–6(–7) cm, together with racemes shorter than leaves.

0.8–4(–4.8) mm.

3.5–8 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.

15–23(–26) mm;

calyx cylindric, (7–)8.5–13.5(–16) mm, strigulose, tube (5.2–)6–10 mm, lobes subulate or lanceolate-subulate, 1.8–4.5(–6) mm;

corolla pink-purple or white with pale pink veins;

banner recurved through 45°;

keel 11.5–17.5 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.

appearing radical, forming ring on ground beneath tufted foliage, ascending, greenish, brightly mottled reddish purple, becoming brownish stramineous, straight or slightly incurved, symmetrically or somewhat obliquely ellipsoid or ovoid-ellipsoid, bladdery-inflated, 35–70(–90) × 15–45 mm, papery, surface lustrous, sparsely strigulose;

gynophore 2–4 mm.

42–71(–76).

38–54.