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, (4–)6–12 × (3–)4–8 mm, margins serrate on distal 1/2.

3–30(–50)-flowered, racemes.

1–3(–6)-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.

(3–)4–6(–8) mm;

calyx pubescent, hairs eglandular and/or glandular, lobes shorter to longer than calyx length;

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 (4–)5–6.5(–7.5) coils, coils weakly to strongly adpressed, usually ovoid, sometimes cylindrical, discoid, or spherical, 5–10(–12) × 5–10(–15) mm, usually pubescent with eglandular and gland-tipped hairs, evident only when young, when glandular, often producing velvety appearance, rarely glabrous, margin prickly, tuberculate, or prickleless, prickles, when present, at different angles to plane of coil, very stocky and difficult to bend, base often round, 2 roots often apparent at maturity;

faces very hard at maturity, coil face with strongly curved radial veins anastomosing somewhat towards coil periphery, veins obscure at maturity from developing spongy tissue.

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

yellow to yellow-brown, reniform, (2.5–)3–4(–4.5) × (1.3–)1.5–2(–2.5) mm;

radicle 1/2, or slightly less, seed length.

margins entire or basally toothed.

margins dentate to laciniate.

= 16, 32.

= 14, 16.