Flora of North America species comparison

20–40 mm.

0–40 mm, usually branched.

30–200 × 3–7 mm;

blade linear or narrowly lanceolate, margins entire, rarely toothed, veins conspicuous or not, abaxial surface villous, adaxial glabrous or sparsely villous.

10–220 × (1–)10–15 mm;

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

100–500 mm, hairy, hairs antrorse, long and short.

40–120 mm, glabrous or hirsute.

greenish or brownish, 80–150 mm, densely flowered, flowers in whorls or pairs;

bracts almost linear, 15–30 mm, length 2–12 times sepals.

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.

sepals 2.7–3.7 mm;

corolla bilaterally symmetric, lobes reflexed, adaxials 1.4–2.3 mm, laterals symmetric, base deeply cordate;

stamens 4, connective elongated, apex acute.

sepals 1.5–3.5 mm;

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

stamens 4.

2, 2.5–2.9 mm.

1–3, 1.5–3 mm.

= 20.

= 24.