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.

20–50 × 2–15 mm;

blade narrowly obovate or narrowly elliptic, margins toothed, veins conspicuous, surfaces densely pilose or glabrate.

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

10–50 mm, hairy, hairs appressed or nearly patent.

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, 40–60 mm, densely flowered;

bracts triangular, 2–3.1 mm, length 0.7–1.1 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 1.8–2.8 mm;

corolla radially symmetric, lobes patent or erect, forming a beak, 1.7–3.1 mm, base obtuse;

stamens 4.

2, 2.1–2.9 mm.

2, 1.5–2.2 mm, adaxial face flat.

= 20.

= 24.