Flora of North America species comparison

0–12 mm.

0–10 mm.

50–130 × 3–7 mm;

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

30–80 × 1–4 mm;

blade linear, margins lobed, rarely entire, veins conspicuous or not, surfaces hairy, sometimes glabrous.

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

5–60 mm, hairy, sometimes glabrous.

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.

greenish or brownish, 50–150 mm, loosely or densely flowered;

bracts ovate, 2 mm, length 0.9–1.1 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;

corolla radially symmetric, lobes spreading, 0.5–1 mm, base obtuse;

stamens 2.

2, 3.2–3.8 mm.

10–25(–30), 0.5–0.8 mm.

= 20.

= 12.