Flora of North America species comparison

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

obscured by stipules.

(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.

palmately trifoliolate, 0.7–3 cm;

stipules 6–10 mm, hyaline;

leaflet blades spatulate to obovate, 2.5–10 mm, apex subacute to obtuse, surfaces silvery-pilose.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

1–3-flowered, subcapitate;

axis obsolete;

bracts sometimes tridentate, 3–6 mm;

bracteoles 0.

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

± obsolete.

1.5–5 mm.

± subobsolete.

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.

12.5–17.5 mm;

calyx 7.3–10.7 mm, silvery-villous, tube 5.8–7.5 mm, lobes linear to narrowly subulate, 1.5–3.7 mm;

corolla whitish to ochroleucous, petals villous abaxially;

banner differentiated into blade and claw, with shoulderlike projections at middle;

keel 10–13 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.

straight or slightly decurved, narrowly ellipsoid, 7–10 × 2.5–3.5 mm, fleshy becoming leathery, densely strigose-hirsutulous.

6–10.

8 or 9.

= 16.