Flora of North America species comparison

prostrate to erect.

procumbent to ascending.

blades obovate to linear or oblanceolate, 5–35 × 2–15 mm, margins serrate distally.

blades cuneate to obovate, 8–15 × 7–12 mm, margins serrate on distal 1/2, rarely incised or laciniate.

3–30(–50)-flowered, racemes.

1–3(–5)-flowered, racemes.

5–15 mm;

calyx glabrous or pubescent, hairs eglandular or glandular, lobes equal to tube;

corolla usually purple, yellow, or variegated yellow-violet, rarely violet, green, or white, [yellow-orange, pink], 2 times length of calyx.

6–8 mm;

calyx pubescent, hairs eglandular, lobes longer than tube;

corolla yellow, less than 2 times length of calyx.

curved or with 1.5–6 coils, falcate when curved, lenticular, ovoid, or cylindrical when coiled, 7–15 × 1.5–3 mm when falcate, 4–14 × 3–9 mm when coiled, glabrescent or pubescent with eglandular and/or glandular hairs;

face veins (when coiled) oblique from ventral suture, slightly branched, fusing towards dorsal suture.

with 2.5–8 coils, coils often strongly adpressed, usually cylindrical, 6–12 × 7–12 mm, often pubescent, sometimes glabrescent, hairs eglandular, margin usually prickly, rarely prickleless, prickles often at 90° to plane of coil, pointed to ends of pod, very stocky and difficult to bend, base often round, 2 roots often apparent at maturity;

faces very hard at maturity, coil face with slightly branched and anastomosing veins, veins weakly to moderately curved.

2–12, yellow, brownish, greenish yellow, or violet-brown, reniform, 1–2.5 × 1–1.5 mm.

2–25, yellow or brownish yellow, reniform, 2.5–4.5 × 1.3–2.5 mm;

radicle less than 1/2 seed length.

margins entire or basally toothed.

margins deeply dentate to laciniate.

= 16, 32.

= (14) 16.