Flora of North America species comparison

erect or ascending, (0–)1–12+ cm underground, villous.

decumbent or prostrate, sparsely strigulose, sometimes glabrous proximally.

(2–)3–12 cm;

stipules distinct, subterranean ones often fully amplexicaul but distinct, 7–15 mm, foliose at distal nodes;

leaflets (5–)7–13(–15), blades elliptic, oblong or lanceolate-elliptic, 10–30(–35) mm, pinnately veined, apex obtuse to rounded, surfaces sparsely villosulous or villous abaxially, glabrous adaxially.

(2–)4–10(–12) cm;

stipules (1.5–)2–8 mm, papery at proximal nodes;

leaflets (9–)13–25(or 27), blades firm, oval, obovate, elliptic-oblanceolate, or suborbiculate, (2–)3–11(–13) mm, veins not apparent, apex round, truncate, or retuse, surfaces sparsely strigose abaxially, glabrous adaxially.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

(5–)10–21-flowered;

axis 1.5–5(–7.5) cm in fruit;

bracts 0.8–1.4 mm;

bracteoles 0–2.

erect, 3–9.8 cm, usually longer than subtending leaf.

decumbent or prostrate, (2–)5–15 cm.

1.5–5 mm.

0.8–2.4 mm.

13–19 mm;

calyx campanulate to subcylindric, 7.5–8.8 mm, villosulous, tube 6.3–8 mm, lobes broadly triangular, 0.6–0.8 mm;

corolla yellowish with whitish margins, banner sometimes purple bordered white, keel 13.2–16 mm.

8.2–15.5 mm;

calyx 3.1–6.3 mm, strigulose, tube 2.4–4 mm, lobes subulate, 1–2 mm;

corolla pink-purple, purplish, or whitish, fading yellowish, sometimes wing tips whitish, banner veins lilac, keel tip maculate;

banner recurved through 45°;

keel 5.5–9.3 mm, apex blunt.

green becoming brown, ± straight, ovoid, inflated, 15–21 × 5.5–8 mm, papery-membranous, black-pilose, hairs to 0.5 mm;

stipe 5–7 mm, pubescent.

usually ascending, rarely declined (humistrate), green becoming brown then blackish, incurved, narrowly lunate-ellipsoid to obliquely oblong-, ovoid-, or obovoid-ellipsoid, somewhat dorsiventrally compressed, 13–25 × 3.5–7 mm, subunilocular, thinly fleshy becoming leathery, not especially reticulate, glabrous;

gynophore 0.4–1.4 mm.

6–10.

16–37.

= 16.