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.

20–120 × 4–25 mm;

blade obovate or narrowly obovate, margins toothed, veins conspicuous, surfaces pilose or glabrate.

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

30–240 mm, hairy, hairs patent, long.

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 yellowish, 38–260 mm, densely or loosely flowered;

bracts narrowly ovate or ovate, 1.6–2.5 mm, length 0.7–1 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 1.5–2.4 mm, apex obtuse;

corolla radially symmetric, lobes erect, forming a beak, 1.1–2.9 mm, base obtuse;

stamens 4.

2, 3.2–3.8 mm.

2, brown or yellowish brown, 1.6–2 mm, adaxial face deeply concave.

= 20.

= 24.