Flora of North America species comparison

0–40 mm, usually branched.

0–10 mm.

10–220 × (1–)10–15 mm;

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

20–80(–115) × 5–15 mm;

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

40–120 mm, glabrous or hirsute.

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

greenish or brownish, (15–)50–200(–290) mm, densely or loosely flowered;

bracts broadly ovate, 1.5–4(–6) mm, length 0.8–1.2 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 1.5–3.5 mm;

corolla radially symmetric, tube hairy, lobes reflexed, 1–1.5 mm, base obtuse;

stamens 4.

sepals 2–3 mm;

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

stamens 4.

1–3, 1.5–3 mm.

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

= 24.

= 10, 20, 30 (all Eurasia).