Flora of North America species comparison

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

erect or ascending, 4–24 cm underground and cream to stramineous, strigulose-pilose.

(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.

unifoliolate distally, reduced to phyllodia, 1.5–6.5(–8) cm;

stipules 10–25 mm, firm, papery at proximal nodes, foliaceous at distal nodes;

leaflet blades (when present), decurrent, closely folded, linear to narrowly oblong, 2–17 mm, apex acute to obtuse, surfaces silvery-strigose;

terminal leaflet decurrent, not jointed to rachis.

appearing subumbellate, loosely 5–11-flowered;

axis 1–5 cm in fruit;

bracts (1.5–)2.5–3.8 mm;

bracteoles 0.

8–45-flowered;

axis 2–28 cm in fruit;

bracts 2.5–7 mm;

bracteoles 0–2.

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

ascending or erect, 3.5–18 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.

12–19 mm;

calyx 7.2–10.9 mm, pilosulous, tube 4.2–6.6 mm, lobes lanceolate-subulate, 2.7–6 mm;

corolla pink to red-purple with pale or white wing tips;

keel 9.4–14.3 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.

dehiscent on plant, stramineous, straight to hamately incurved, 14–24 × 2.5–4.8 mm, stiffly papery, strigulose.

6–10.

= 16.