Flora of North America species comparison

0–20 mm.

0–10 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.

60–120 × 4–10 mm;

blade linear, margins toothed (teeth to 4 mm), rarely entire, veins conspicuous or not, surfaces villous or sericeous.

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

280–580 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, 50–180 mm, densely flowered, flowers in whorls or pairs;

bracts ovate or triangular, 1.5–6 mm, length 0.6–1.4 times sepals, apex acute or acuminate.

sepals 1.5–2 mm;

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

stamens 4.

sepals 2.5–4 mm;

corolla bilaterally symmetric, abaxial and lateral lobes reflexed, adaxial erect, 2.2–2.5 mm, base slightly cordate;

stamens 4, connective significantly elongated, apex acute.

(2–)4–5 mm, dehiscing at middle.

5–35, 0.5–1 mm.

2, 2.4–3.4 mm.

= 12.

= 20.