Flora of North America species comparison

0–20 mm.

0–10 mm.

ascending, 180–250 × 6–20 mm;

blade linear to lanceolate or oblanceolate, margins entire, rarely toothed, veins conspicuous, surfaces glabrate or hairy, hairs 1 mm.

20–80(–115) × 5–15 mm;

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

50–230 mm, not groove-angled, hairy or glabrous.

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

grayish or whitish, 80–350 mm, usually densely flowered, shiny;

corolla lobes of neighboring flowers often overlapping;

bracts broadly ovate, 1.8–2 mm, length 0.9–1 times sepals.

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 2 mm, adaxial 2 nearly distinct;

corolla radially symmetric, lobes reflexed, 2 mm, base obtuse;

stamens 4.

sepals 2–3 mm;

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

stamens 4.

3–7, 1–1.8 mm.

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

= 12.

= 10, 20, 30 (all Eurasia).