Flora of North America species comparison

0–10 mm.

0–10 mm.

50–120 × 1–4 mm;

blade linear, margins entire or toothed, veins conspicuous or not, surfaces villous or lanate, rarely glabrate.

40–350 × 6–77 mm;

blade elliptic to narrowly elliptic, margins entire, veins conspicuous, surfaces pilose, rarely glabrate, adaxial surface hairs not floccose, less than 2 mm long, more than 0.03 mm wide.

200–1500 mm, hairy, hairs antrorse, long and short.

30–560 mm, hairy, hairs antrorse, short.

greenish or brownish, 70–150 mm, densely flowered, flowers in whorls or pairs;

bracts ovate, 1–2 mm, length 0.3–0.8 times sepals.

greenish or brownish, 100–1000 mm, densely flowered;

bracts narrowly triangular, 1.6–4.2 mm, length 0.8–1.5 times sepals.

sepals 2.5–3.4 mm;

corolla radially symmetric, lobes reflexed, 2–2.7 mm, base obtuse or slightly cordate;

stamens 4, connective elongated, apex acute.

sepals 2–2.5 mm;

corolla radially symmetric, lobes erect, forming a beak, 2–2.8 mm, base obtuse;

stamens 4.

2, 2.1–2.9 mm.

3, 1.2–2.2 mm.

= 20.

= 24.