Flora of North America species comparison

100–400 mm, freely branched.

0–10 mm.

cauline, opposite, 30–60 × 0.75–1 mm;

blade linear to linear-lanceolate, margins entire, veins inconspicuous, surfaces hairy.

20–50 × 2–15 mm;

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

30–80 mm, hairy.

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

greenish or brownish, 40–85 mm, densely flowered;

bracts broadly ovate, 5–6 mm, lengths equal to sepals.

greenish or brownish, 40–60 mm, densely flowered;

bracts triangular, 2–3.1 mm, length 0.7–1.1 times sepals.

sepals 5–6 mm;

corolla radially symmetric, lobes reflexed, 3–3.5 mm, base obtuse;

stamens 4.

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.

1 or 2, 2 mm.

2, 1.5–2.2 mm, adaxial face flat.

= 12.

= 24.