Flora of North America species comparison

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

spreading or prostrate, sparsely 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–)2.5–8.5 cm;

stipules connate-clasping and membranous becoming papery-scarious at proximal nodes, connate or distinct and subherbaceous at distal nodes, 1–7 mm;

leaflets 7–17(or 19), blades oblanceolate to obovate, ovate, or elliptic, 2–15(–17) mm, apex rounded to emarginate or acute, surfaces 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.

compactly or loosely 3–16-flowered;

axis 0.5–10 cm in fruit;

bracts 0.5–2.5 mm;

bracteoles 0.

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

1.5–12.5(–18.5) cm.

1.5–5 mm.

0.7–2.2 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.

(7–)8–12 mm;

calyx 3.8–6.1(–7.2) mm, black-strigose, tube 2.4–3.8 mm, lobes subulate, 1.2–2.4 mm;

corolla pink-purple suffused with purple or partly white;

banner recurved through 40–45°;

keel (5.3–)5.5–8.9 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.

ascending to spreading, stramineous, straight or slightly curved, obliquely ovoid, somewhat 3-sided compressed, swollen, slightly bladdery, (4.5–)7–10(–12) × (2.2–)3–4.5 mm, papery-membranous, translucent, strigose;

gynophore 0.3–1 mm.

6–10.

2–10.

= 16.

= 24, 32.