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, 60–80 × 1–3 mm;

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

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

100–650 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, (50–)150–250 mm, densely flowered, eglandular;

bracts proximal strongly differing from distal, ovate, 2–5(–7) mm, length 1–1.5 times sepals, proximal bracts: apex acute.

sepals 1.5–2 mm;

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

stamens 4.

sepals 2–3 mm;

corolla radially symmetric, lobes reflexed, 2–4 mm, base obtuse;

stamens 4.

ovoid, indehiscent or dehiscence not circumscissile.

1 or 2, 4–5 mm.

2, 2–2.5 mm.

= 24.

= 12.