Flora of North America species comparison

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

erect, decumbent, or incurved-ascending, with 2–4 much-elongated internodes, strigulose.

(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.

(3–)5–17 cm;

stipules 4–7 mm, papery-scarious at proximal nodes, submembranous at distal nodes;

leaflets (11 or)13–21, blades oblong-obovate, ovate, linear-oblong, or linear-elliptic, 3–17 mm, apex truncate to deeply retuse or obtuse to subacute, surfaces strigulose.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

7–25(–30)-flowered, flowers nodding;

axis 1.5–12(–16) cm in fruit;

bracts 1–2.5 mm;

bracteoles 0–2.

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

incurved-ascending, 6–20(–24) cm.

1.5–5 mm.

0.7–5 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.

(11.2–)12.5–16.6 mm;

calyx campanulate, 4.5–7 mm, strigulose, tube 3.8–5.5 mm, lobes subulate, 0.7–1.2(–1.5) mm;

corolla white, keel tip maculate;

banner recurved through 90°;

keel 8.8–10.7 mm.

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.

erect, stramineous, ± straight or slightly incurved, narrowly oblong or ovoid-oblong, obcompressed, 12–17 × 3.3–6.3 mm, ± bilocular, fleshy becoming leathery, glabrous;

septum 0.7–1.1 mm wide;

sessile.

6–10.

24–36.

= 16.