Flora of North America species comparison

0–20 mm.

0–10 mm.

40–200 × 10–30 mm;

blade lanceolate-spatulate to narrowly ovate, margins entire, sometimes toothed, veins conspicuous, surfaces usually glabrous.

60–120 × 4–10 mm;

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

25–200 mm, slightly surpassing leaves, glabrous.

280–580 mm, hairy, hairs antrorse, long and short.

brownish or greenish, 45–250 mm, densely flowered, rachis not clearly visible between flowers;

bracts broadly ovate, 2 mm, length 0.8–1 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 2–2.5 mm;

corolla radially symmetric, lobes spreading, 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.

3 or 4, 2–2.3 mm.

2, 2.4–3.4 mm.

= 24.

= 20.