Flora of North America species comparison

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

from rhizome buds, internodes short and strongly flexuous, decumbent, ascending distally, 3–10(–14) cm underground, strigose.

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–)5–15 cm;

stipules bidentate, (2.5–)3.5–11 mm, papery, pallid;

leaflets (7 or)9–15(–21), blades broadly obovate or suborbiculate-obcordate, 4–20 mm, apex obtuse or widely and shallowly notched, surfaces strigose, sometimes less densely so adaxially.

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

axis (2–)2.5–12(–17) cm in fruit;

bracts 1–3 mm.

(15–)20–35-flowered, flowers nodding;

axis 3–7.5 cm in fruit;

bracts 2–5.5 mm.

erect, 2.5–13 cm.

erect or divaricate, 1.5–5.5 cm.

0.8–4(–4.8) mm.

0.6–2.2 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.

15.5–19 mm;

calyx deeply campanulate or subcylindric, 6.5–10 mm, sparsely strigulose, tube 5.5–7.3 mm, lobes subulate, 1–3 mm;

corolla ochroleucous, concolorous;

keel 11.5–13.5 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.

erect or narrowly ascending, brown, ± straight or incurved through 0.25 spiral, oblong, slightly obcompressed, 1–1.5(–1.8) × (3–)4–6 mm, fleshy becoming leathery, sparsely strigulose;

sessile.

42–71(–76).

(17–)20–28.