Flora of North America species comparison

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

several, reclining or ascending, proximal few nodes 0.5–5 cm underground, villous-hirsutulous.

(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.

2–8 cm;

stipules 3–7 mm, membranous;

leaflets 9–21, blades obovate to oblanceolate, 3–11 mm, apex obtuse or emarginate, surfaces loosely pilose 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.

3–10-flowered, flowers ascending;

axis 0.5–2 cm in fruit, not much elongating;

bracts 2.5–4.5 mm;

bracteoles 2.

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

incurved-ascending, reclined in fruit, 1.5–5 cm.

1.5–5 mm.

1.5–3 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.

14–19 mm;

calyx campanulate-cylindric, 5.8–10 mm, villosulous, tube 4.7–7 mm, lobes subulate, 1.1–3 mm;

corolla reddish violet to pink-purple;

keel 10.2–11.5(–15) 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.

firmly attached to receptacle, falling while still attached to pedicel, ascending to declined (humistrate), stramineous, incurved through 0.3 spiral, crescentic, 3-sided compressed, deltoid in cross section, dorsal suture slightly grooved, 20–45 × 5–8 mm, bilocular, scarcely fleshy becoming leathery, faces prominently reticulate, sparsely villosulous, hairs to 1 mm;

septum 3.5–4.2 mm wide;

stipe 1–2.5 mm.

6–10.

= 16.