Flora of North America species comparison

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

erect, hollow, glabrous 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.

4–12 cm;

stipules (1.5–)2–6 mm, membranous or thinly herbaceous;

leaflet blades oblong-elliptic, oblong, or oblong-obovate to linear-oblong, (4–)7–23(–25) mm, apex obtuse to retuse-emarginate, surfaces sparsely strigulose 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.

(6–)10–20-flowered;

axis 1–4.5 cm in fruit;

bracts 1–2.2 mm;

bracteoles 0–2.

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

erect, (2.5–)3–7.5 cm.

1.5–5 mm.

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.

11.6–15 mm;

calyx 5.6–8 mm, strigulose, tube 3.7–5 mm, lobes subulate, 1.8–3 mm;

corolla drying ochroleucous;

keel 10.1–12.4 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.

stramineous to brownish, turning dark brown to nearly black, ± straight, 14–30 × 8–18 mm, stiffly papery, glabrous;

septum to 1.5 mm wide, seed-bearing flange 0.8–1.3 mm wide.

6–10.

= 16.

= 22.