Flora of North America species comparison

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

prostrate, when developed, 0–2.5 cm, mostly obscured by stipules, 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.

1.5–9 cm;

stipules connate-sheathing at proximal nodes, connate or distinct at distal nodes, 2–5 cm, membranous;

leaflets 5–17, blades elliptic, oblanceolate, or obovate, 3–12 mm, apex acute to obtuse, surfaces strigose.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

4–13-flowered, flowers ascending or spreading;

axis 1.5–8 cm in fruit;

bracts 2–4.5 mm;

bracteoles 0.

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

erect, 2–9 cm.

1.5–5 mm.

0.5–2 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.

12–16 mm;

calyx cylindric, 6–8.5 mm, strigose, tube 4.5–6 mm, lobes subulate, 1.2–2.5 mm;

corolla purplish;

keel 9.5–12.5 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.

declined to deflexed, green, usually red-mottled or -spotted, becoming stramineous, lunately incurved, obliquely ovoid or lanceoloid-ellipsoid, dorsiventrally compressed, 10–14 × 3.5–6.5 mm, unilocular or subunilocular, thickly papery, hirsute, hairs lustrous;

sessile, gynophore 0.3–0.8 mm.

6–10.

20.

= 16.