Flora of North America species comparison

0–12 mm.

0–20 mm.

50–130 × 3–7 mm;

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

(30–)50–250 × (5–)15–70 mm;

blade lanceolate to elliptic, margins entire, veins conspicuous, laterals branching from base, surfaces glabrous or hairy.

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

(40–)50–300 mm, glabrous or hairy.

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.

brownish or greenish, (25–)80–500 mm, loosely flowered, rachis visible between flowers;

bracts broadly ovate, 2–2.5 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 2–2.5 mm;

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

stamens 4.

2, 3.2–3.8 mm.

2–4, 2–2.5 mm.

= 20.

= 24.