Flora of North America species comparison

prostrate, silvery-pilose.

ascending to erect, flexuous, diffusely interbranched, 6–16 cm underground, proximalmost epigeous internodes the shortest, clumps to 1+ m wide, strigulose.

1–4 cm;

stipules 2–8 mm, hyaline, densely pilose abaxially;

leaflets usually 3, rarely 5, blades narrowly to broadly oblanceolate or obovate-cuneate, 3–13 mm, apex subacute, surfaces silvery-pilose.

1.5–6.5 cm, unifoliolate throughout or distally, terminal leaflet slightly expanded and confluent with filiform rachis;

stipules distinct throughout, 1–5 mm, membranous becoming papery at proximal nodes, herbaceous at distal nodes;

leaflets (1 or)3–9, blades linear-oblong to linear-elliptic or linear, 2–11 mm, apex acute, surfaces strigose;

terminal leaflet decurrent distally, not jointed to rachis.

(2 or)3–5-flowered;

axis to 1 cm in fruit;

bracts 1–2.5 mm.

3–17-flowered, flowers ascending;

axis 5–40(–42) cm in fruit;

bracts 0.5–1.1 mm;

bracteoles 0.

0.5–2.5 cm.

incurved-ascending, 6–19 cm.

1–3.5 mm.

1.5–5.5 mm.

5–6.2(–8) mm;

calyx campanulate, 2.4–4.2 mm, densely pilose, tube 2–3 mm, lobes triangular-subulate, 1–1.2 mm;

corolla pink-purple or white, often drying yellowish;

banner recurved through 90°;

keel 4–4.5 mm, apex bluntly deltate.

8–10.5 mm;

calyx campanulate, 2.5–4.6 mm, strigose, tube 1.5–3.7 mm, lobes triangular, 0.5–1.9 mm;

corolla pink-purple;

banner recurved through 50°;

keel 7.4 mm, apex obtuse to subacute, not beaklike.

ascending or recurved, ovoid-ellipsoid, slightly compressed, 3–4.5 × 2 mm, papery, densely silky-strigose or silky-pilose.

pendulous, stramineous, straight or decurved, narrowly ellipsoid, dorsiventrally or laterally compressed or subterete, 17–28 × 3.8 mm, papery, strigose or glabrous;

stipe 2.5–5 mm.

6–10.

10–12.