Flora of North America species comparison

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

decumbent to ascending, (2–)15–25 cm, 1 to several internodes elongated and longer than stipules, glabrous or sparsely hairy.

(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.

3–21 cm;

stipules 1.5–7 mm, thinly herbaceous becoming papery;

leaflets 9–21(–25), blades oval to obovate or orbiculate, 3–20 mm, apex obtuse to retuse or mucronate, surfaces glabrous, ciliate.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

3–14-flowered, flowers spreading;

axis 1–8 cm in fruit;

bracts 1.5–5 mm;

bracteoles 0–2.

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

ascending or incurved, 4–13 cm, together with racemes shorter than leaves.

1.5–5 mm.

2–6 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.

11–24 mm;

calyx cylindric or campanulate, 6–12 mm, glabrous or sparsely strigulose, tube 4–8.5 mm, lobes subulate, 2–6(–7.7) mm;

corolla ochroleucous (concolorous) or pink-purple and wing tips white (bicolored);

banner recurved through 85°;

keel 9.5–16 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.

spreading to pendulous, often red-mottled, straight or slightly incurved, ellipsoid, semi-ellipsoid, or semi-ovoid, bladdery-inflated, (20–)25–55(–63) × 10–30 mm, thin becoming papery, glabrous;

seed-bearing flange narrow or obsolete, 0.2–0.7 mm wide;

gynophore 3.5–11 mm.

6–10.

28–54.

= 16.