Flora of North America species comparison

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

erect or diffuse, flexuous, becoming decumbent-sprawling, sparsely strigose-pilose or glabrate.

(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.

2–10 cm;

stipules 2–8 mm, herbaceous, becoming membranous;

leaflets 17–29(or 31), blades lanceolate-elliptic or oblong, 5–35 mm, apex obtuse, apiculate, or acute, surfaces strigulose, sometimes glabrate adaxially.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

(6–)10–30-flowered, flowers ascending;

axis (1.5–)2–5 cm in fruit;

bracts 2–6.5 mm;

bracteoles 0.

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

incurved-ascending, 3.5–11 cm, together with racemes shorter than leaves.

1.5–5 mm.

0.3–1.5 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.

12.5–16.5 mm;

calyx subcylindric, 6.5–9 mm, strigulose, tube 5–6 mm, lobes triangular-acuminate, 1.6–3 mm;

corolla ochroleucous;

keel 9.6–10.5 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.

ascending to spreading, black, straight, obovoid to subglobose, inflated but firm, hardly bladdery, 6–14 × 5–10(–12) mm, sulcate ventrally, fleshy becoming leathery or stiffly papery, pilose;

stipe to 0.8 mm.

6–10.

= 16.

= 16, 32, 48, 64.