Flora of North America species comparison

0–5 mm.

0–10 mm.

20–70 × 1–2 mm;

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

60–120 × 4–10 mm;

blade linear, margins toothed (teeth to 4 mm), rarely entire, veins conspicuous or not, surfaces villous or sericeous.

15–60 mm, hairy, sometimes glabrous.

280–580 mm, hairy, hairs antrorse, long and short.

greenish or brownish, 20–100 mm, loosely or densely flowered;

bracts triangular-ovate, 1.5–2 mm, length 0.9–1.1 times sepals.

greenish or brownish, 50–180 mm, densely flowered, flowers in whorls or pairs;

bracts ovate or triangular, 1.5–6 mm, length 0.6–1.4 times sepals, apex acute or acuminate.

sepals 1.5–2 mm;

corolla radially symmetric, lobes erect, forming a beak, 0.5 mm, base obtuse;

stamens 2.

sepals 2.5–4 mm;

corolla bilaterally symmetric, abaxial and lateral lobes reflexed, adaxial erect, 2.2–2.5 mm, base slightly cordate;

stamens 4, connective significantly elongated, apex acute.

4, 0.8–1.3 mm.

2, 2.4–3.4 mm.

= 12.

= 20.