Flora of North America species comparison

0–12 mm.

0–20 mm.

50–130 × 3–7 mm;

blade linear, margins entire, veins conspicuous or not, surfaces villous, adaxial rarely glabrous.

prostrate, sometimes ascending, 40–200 × 30–70 mm;

blade elliptic to ovate, margins entire or toothed, veins conspicuous, surfaces hairy, hairs 0.5 mm.

80–250 mm, hairy, hairs patent, long and antrorse, short.

80–300 mm, not groove-angled, hirsute.

greenish, whitish, or brownish, 50–120 mm, densely flowered, flowers in whorls or pairs;

bracts triangular, 2.5–8 mm, length 0.6–2.2 times sepals.

grayish or whitish, 100–400 mm, densely flowered, shiny;

corolla lobes of neighboring flowers overlapping;

bracts ovate, 1.8–2 mm, length 0.9–1 times sepals.

sepals 3.5–4 mm;

corolla radially symmetric, lobes reflexed, 3–3.6 mm, base slightly cordate;

stamens 4, connective elongated, apex acute.

sepals 2 mm, adaxial 2 nearly distinct;

corolla radially symmetric, lobes reflexed, 1.5 mm, base obtuse;

stamens 4.

2, 3.2–3.8 mm.

2–4, 2 mm.

= 20.

= 12, 24.