Flora of North America species comparison

0–12 mm.

0–40 mm, usually branched.

50–130 × 3–7 mm;

blade linear, margins entire, veins conspicuous or not, surfaces villous, adaxial rarely glabrous.

10–220 × (1–)10–15 mm;

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

80–250 mm, hairy, hairs patent, long and antrorse, short.

40–120 mm, glabrous or hirsute.

greenish, whitish, or brownish, 50–120 mm, densely flowered, flowers in whorls or pairs;

bracts triangular, 2.5–8 mm, length 0.6–2.2 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 3.5–4 mm;

corolla radially symmetric, lobes reflexed, 3–3.6 mm, base slightly 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, 3.2–3.8 mm.

1–3, 1.5–3 mm.

= 20.

= 24.