Flora of North America species comparison

prostrate to erect.

procumbent or ascending.

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

blades obovate, ovate, or oblanceolate, 12–16 × 6–8 mm, margins serrate or doubly serrate on distal 3/4 or less.

3–30(–50)-flowered, racemes.

(1–)3–8(–10)-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–)5–8  mm;

calyx pubescent or glabrescent, hairs eglandular, sometimes also glandular, lobes equal to or slightly longer than tube;

corolla yellow or orange-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–)5–7(–9) coils, spherical to ovoid, 6–12(–15) × 5–8 mm, apex truncate, glabrous, margin usually prickly or tuberculate, sometimes smooth, prickles or tubercles, when present, sometimes inclined opposite to direction of fruit coiling, giving appearance of rapidly spinning top, very stocky and difficult to bend, base often round, 2 roots often apparent at maturity;

faces very hard at maturity, coil face with radial veins entering veinless margin in distal 1/4–1/3 of coil, 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 light brown, reniform, 4–5 × 2–2.5 mm;

radicle less than 1/2 seed length.

margins entire or basally toothed.

margins entire or dentate.

= 16, 32.

= 16, 18.