Flora of North America species comparison

0–40 mm, usually branched.

100–350 mm, freely branched.

10–220 × (1–)10–15 mm;

blade linear to lanceolate, margins entire or toothed, veins not conspicuous, surfaces glabrous, sometimes hairy.

cauline, opposite, 30–60 × 1–4 mm;

blade linear to linear-lanceolate, margins entire or slightly toothed, veins conspicuous or not, surfaces hairy.

40–120 mm, glabrous or hirsute.

30–50 mm, hairy.

greenish or brownish, (15–)50–200(–290) mm, densely or loosely flowered;

bracts broadly ovate, 1.5–4(–6) mm, length 0.8–1.2 times sepals.

greenish or brownish, 40–65 mm, densely flowered, glandular-hairy;

bracts all similar, ovate, 3–5 mm, lengths 1–1.5 times sepals.

sepals 1.5–3.5 mm;

corolla radially symmetric, tube hairy, lobes reflexed, 1–1.5 mm, base obtuse;

stamens 4.

sepals 3–3.5 mm;

corolla radially symmetric, lobes reflexed, 2–3 mm, base obtuse;

stamens 4.

lanceoloid.

1–3, 1.5–3 mm.

2, 2–3 mm.

= 24.

= 12.