Flora of North America species comparison

10–40 mm.

0–5(–7) mm.

60–160 × 3–5 mm;

blade linear, margins entire, veins conspicuous or not, abaxial surface villous, adaxial glabrous, rarely sparsely villous.

10–70 × (0.8–)1–2 mm;

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

800–1600 mm, hairy, hairs antrorse, long and short.

10–80 mm, glabrous or hairy.

greenish or brownish, (20–)150–250 mm, densely flowered, flowers in whorls or pairs;

bracts ovate or triangular, 1–3.5 mm, length 0.4–0.8 times sepals.

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 3–4 mm;

corolla bilaterally symmetric, lobes reflexed, adaxials 2.4–3 mm, laterals asymmetric, base cordate;

stamens 4, connective 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, 2.8–3.2 mm.

(3 or)4–9(–12), 1.5–2.5 mm.

= 20.

= 12, 20, 36.