Flora of North America species comparison

0–10 mm.

0–20 mm.

30–80 × 1–4 mm;

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

45–140 × 1.5–4 mm;

blade linear, margins entire, veins conspicuous or not, surfaces sericeous, rarely lanate.

5–60 mm, hairy, sometimes glabrous.

300–1300 mm, hairy, hairs antrorse, long and short.

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

bracts ovate, 2 mm, length 0.9–1.1 times sepals.

greenish or brownish, 70–200 mm, densely or loosely flowered, flowers in whorls or pairs;

bracts ovate, 1.5–2 mm, length 0.4–0.7 times sepals, apex acute.

sepals 2 mm;

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

stamens 2.

sepals 2.6–3.3 mm;

corolla bilaterally symmetric, lobes reflexed, 1.7–2.6 mm, base cordate;

stamens 4, connective slightly elongated, apex obtuse.

10–25(–30), 0.5–0.8 mm.

2, 2.3–2.8 mm.

= 12.