Flora of North America species comparison

prostrate, silvery-pilose.

decumbent proximally, erect distally, 2–10 cm underground, often fistulose, sparsely 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.

5–22 cm;

stipules connate-sheathing at proximal nodes, distinct at distal nodes, 3–9 mm;

leaflets 13–21, blades ovate to obovate, lanceolate, or elliptic, 4–24 mm, apex obtuse to retuse, surfaces strigose along veins abaxially, glabrous adaxially.

(2 or)3–5-flowered;

axis to 1 cm in fruit;

bracts 1–2.5 mm.

(15–)20–40-flowered;

axis (4–)10–16 cm in fruit;

bracts 1.5–4 mm;

bracteoles 0–2.

0.5–2.5 cm.

(4–)9–23 cm.

1–3.5 mm.

0.7–3.5 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.

(11–)14–18 mm;

calyx 5–6 mm, strigose, tube 4–5 mm, lobes triangular to subulate, 0.5–0.9(–1.2) mm;

corolla ochroleucous;

banner recurved through 25°.

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

erect, ovoid to ellipsoid, obcompressed, inflated (turgid), 12–18 × 8–10(–12) mm, papery, glabrous;

septum to 0.2 mm wide;

stipe slender, 7–15 mm.

6–10.