Flora of North America species comparison

glabrous or sparsely tomentose (especially distally).

glabrous or with scattered hairs near leaf bases and among heads.

usually 1 (relatively thin, delicate).

single or loosely clustered.

evenly distributed;

sessile;

blades oblanceolate to lance-linear, 2–4 × 0.5–1 cm, bases sometimes weakly clasping, margins usually subpinnate to dentate, sometimes subentire (distal leaves bractlike).

evenly distributed;

petiolate or subsessile;

blades lanceolate, 4–10 × 2–4 cm, bases ± tapered, margins denticulate (distal leaves sessile, smaller).

0 or 1–5;

corolla laminae 0.5–1+ mm (barely surpassing phyllaries, heads perhaps technically disciform).

± 8;

corolla laminae ± 10 mm.

± 8 or ± 13, 5–6 mm, tips greenish.

± 13, 7–10 mm, tips black (hairy).

0 or of 1–3+ lance-deltate bractlets.

of 3–7 bractlets (0.5–3 mm).

4–10+ in open, cymiform arrays.

(1–)3–5(–6) in cymiform arrays.

densely hairy.

glabrous.

= 40.