Flora of North America species comparison

0–30 mm, often branched.

0–10 mm.

10–230 × 0.5–12 mm;

blade linear or narrowly elliptic, margins toothed, veins conspicuous or not, surfaces villous or lanate to sericeous.

20–80(–115) × 5–15 mm;

blade lanceolate, margins usually 1- or 2-pinnatifid, veins conspicuous or not, surfaces villous, hairs septate, sometimes glabrate.

10–400 mm, hairy, hairs woolly, long.

decumbent, sometimes erect, 15–150(–210) mm, villous.

grayish or brownish, 20–400 mm, densely flowered, flowers in spirals;

bracts ovate or elliptic, 1.7–4 mm, length 0.8–1.2 times sepals, apex not reached by green nerve.

decumbent, sometimes erect, greenish, purplish, or brownish, (15–)30–300 mm, densely flowered;

bracts ovate to lanceolate, 1.5–2 mm, length 0.5–0.6 times sepals.

sepals 1.9–3.5 mm;

corolla radially symmetric, lobes reflexed, 1.3–2.8 mm, base cuneate;

stamens 4.

sepals 2–3 mm;

corolla radially symmetric, tube hairy, lobes reflexed, 1 mm, base obtuse;

stamens 4.

2, 2–2.6 mm.

(2–)4 (plus 1 smaller, distal one of different shape), 1–1.5 mm.

= 8.

= 10, 20, 30 (all Eurasia).