Flora of North America species comparison

0–15 mm.

0–20 mm.

(25–)50–120 × 1–4 mm;

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

100–300 × 80–200 mm;

petiole to 300 mm;

blade broadly oval to cordate-ovate, margins entire, veins conspicuous, laterals branching from midvein distal to base, surfaces glabrous.

(10–)40–240(–260) mm, hairy, hairs antrorse, long and short and patent, long.

200–300 mm, glabrous.

grayish or brownish, 40–120 mm, densely flowered, flowers in whorls or pairs;

bracts triangular or narrowly ovate, 2–10 mm, length 1–2 times sepals, apex acute or acuminate.

brownish or greenish, 100–500 mm, loosely flowered, rachis visible between flowers;

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

sepals 2.2–4.8 mm;

corolla bilaterally symmetric, lobes reflexed, 1.6–2.1 mm, base cordate;

stamens 4, connective usually elongated, apex acute.

sepals 2–2.5 mm;

corolla radially symmetric, lobes spreading, 2–2.5 mm, base obtuse;

stamens 4.

2, 2.2–2.6 mm.

2–4, 2.5–3.5 mm.

= 20.

= 24.