Flora of North America species comparison

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

prostrate or ascending, sometimes reduced to crowns, internodes 1–6 cm, concealed by stipules, villous or villosulous.

(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.

(2.5–)3.5–9.5 cm;

stipules 2.5–6 mm, membranous;

leaflets (7 or)9–17(or 19), blades broadly oblanceolate to obovate or cuneate-obovate, 3–13 mm, apex obtuse or truncate, surfaces villous or villosulous abaxially, glabrous or glabrescent adaxially.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

(6–)8–15-flowered, flowers ascending;

axis (0.5–)1–3 cm in fruit;

bracts 1.5–3.5 mm;

bracteoles 0.

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

ascending, arcuate-procumbent or prostrate in fruit, 2.5–9.5 cm.

1.5–5 mm.

0.7–2 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.

13–16 mm;

calyx cylindric to deeply campanulate, 5.2–8 mm, villosulous, tube 4.6–6.5 mm, lobes triangular-subulate, 1.2–2 mm;

corolla reddish lilac or pale purple;

banner recurved through 40°;

keel 10.4–13 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.

ascending (humistrate), stramineous, lunate or crescentically incurved through 0.5 spiral, narrowly ellipsoid to lanceoloid-ellipsoid, 3-sided compressed, (13–)20–30 × 3.5–6(–7) mm, bilocular, fleshy, strigulose;

septum 1.3–2.3 mm wide.

6–10.

27–36.

= 16.