Flora of North America species comparison

0–20 mm.

0–20 mm.

20–150(–400) × 10–120(–170) mm;

petiole to 200 mm;

blade ovate to cordate-ovate, margins entire or toothed, veins conspicuous, surfaces glabrous or hirsute.

45–140 × 1.5–4 mm;

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

50–250(–500) mm, surpassing leaves or not, glabrous or hirsute.

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

brownish or greenish, (20–)50–300(–400) mm, densely flowered;

bracts lanceolate, 0.5–1 mm, length 0.3–0.7 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 1.5–2 mm;

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

stamens 4.

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.

(2–)4–5 mm, dehiscing at middle.

5–35, 0.5–1 mm.

2, 2.3–2.8 mm.

= 12.