Flora of North America species comparison

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

single or few, prostrate-ascending, 3.5–14 cm underground, strigulose.

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.

3–14 cm;

stipules connate-sheathing at proximal nodes, connate or distinct at distal nodes, 2–6 mm, membranous;

leaflets 7–15(–19), blades obovate, 4–15 mm, apex round to emarginate, surfaces strigose, sometimes glabrous adaxially.

(15–)20–40-flowered;

axis (4–)10–16 cm in fruit;

bracts 1.5–4 mm;

bracteoles 0–2.

5–20-flowered;

axis 1.2–13 cm in fruit;

bracts 1.5–3 mm;

bracteoles 2.

(4–)9–23 cm.

erect, 0.5–9.5 cm.

0.7–3.5 mm.

1–3 mm.

(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°.

13.5–22 mm;

calyx 4.8–7.5 mm, black-strigose, tube 4.2–6 mm, lobes broadly triangular, 0.5–1.5 mm;

corolla ochroleucous, or pink-purple with white wing tips;

banner recurved through 30°;

keel 9–12.2 mm.

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.

ascending-erect, green and purple-dotted becoming purple-stramineous, straight or slightly decurved, ovoid to subglobose, terete, inflated, 12–20 × 8–11 mm, thin becoming papery, glabrous or glabrate;

stipe 9–19 mm.