Flora of North America species comparison

0–15 mm.

0–5(–7) mm.

(25–)50–120 × 1–4 mm;

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

10–70 × (0.8–)1–2 mm;

blade linear to almost filiform, margins entire, veins conspicuous or not, surfaces glabrous or hairy.

(10–)40–240(–260) mm, hairy, hairs antrorse, long and short and patent, long.

10–80 mm, glabrous or hairy.

grayish or brownish, 40–120 mm, densely flowered, flowers in whorls or pairs;

bracts triangular or narrowly ovate, 2–10 mm, length 1–2 times sepals, apex acute or acuminate.

greenish, brownish, or gray, (30–)50–150 mm, densely or loosely flowered;

bracts ovate, 2–2.5 mm, length 0.8–1.2 times sepals.

sepals 2.2–4.8 mm;

corolla bilaterally symmetric, lobes reflexed, 1.6–2.1 mm, base cordate;

stamens 4, connective usually elongated, apex acute.

sepals 2–2.5 mm;

corolla radially symmetric, lobes spreading or reflexed, not forming a beak, 0.5–1 mm, base obtuse;

stamens 2.

2, 2.2–2.6 mm.

(3 or)4–9(–12), 1.5–2.5 mm.

= 20.

= 12, 20, 36.