Flora of North America species comparison

0–20 mm.

100–350 mm, freely branched.

(80–)100–400(–550) × (5–)10–35(–40) mm;

blade oblanceolate or almost linear, margins entire, veins conspicuous, 4 or 5, surfaces glabrous.

cauline, opposite, 30–60 × 1–4 mm;

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

300–400 mm, glabrous or sparsely hairy, becoming densely so distally.

30–50 mm, hairy.

greenish or brownish, 350–450 mm, loosely flowered;

bracts ovate to deltate, 3–4 mm, length 1.5–2.5 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 1.5–2 mm;

corolla radially symmetric, lobes spreading, 1.5–2 mm, base obtuse;

stamens 4.

sepals 3–3.5 mm;

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

stamens 4.

ovoid, indehiscent or dehiscence not circumscissile.

lanceoloid.

1 or 2, 4–5 mm.

2, 2–3 mm.

= 24.

= 12.