Flora of North America species comparison

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

obsolete (0–6 cm), internodes to 0.5 cm, mostly concealed by stipules, loosely strigulose.

(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.

1.5–7 cm;

stipules distinct throughout, imbricate, broadly ovate, 2–7 mm, mostly broader than stem, submembranous becoming papery-scarious;

leaflets 9–17, blades elliptic to obovate or oblanceolate, 2–8 mm, apex obtuse, surfaces strigulose abaxially, strigulose 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.

3–8(–11)-flowered, flowers ascending;

axis 0.5–2.5 cm in fruit;

bracts 1.5–4 mm;

bracteoles 0.

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

ascending, 1–6.5 cm.

1.5–5 mm.

0.7–1.8 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.

(11.2–)13–15.5 mm;

calyx cylindro-campanulate, 5–7.4 mm, strigulose, tube 4–6.2 mm, lobes triangular-subulate, 1–1.5(–2) mm;

corolla bicolored, banner whitish or suffused or lined with lilac, wing and keel tips purple;

keel 10–12.5 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 (humistrate), green, usually red-mottled, becoming stramineous, incurved, obliquely ellipsoid, dorsiventrally to ± 3-sided compressed, 13–22 × 4–6 mm, unilocular, usually leathery, sparsely strigulose, hairs appressed, to 1 mm;

sessile, gynophore to 0.8 mm.

6–10.

22–31.

= 16.