Flora of North America species comparison

glabrous or sparsely tomentose (especially distally).

sparsely pubescent to tomentose (especially on abaxial leaf faces 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).

progressively reduced distally;

petiolate;

blades triangular, triangular-lanceolate, or lanceolate, 3–10(–15) × 1.5–4 cm, bases cordate to truncate or tapered, margins serrate or dentate (mid and distal leaves sessile, bractlike).

0 or 1–5;

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

0.

± 8 or ± 13, 5–6 mm, tips greenish.

± 8, 6–9 mm, tips green.

0 or of 1–3+ lance-deltate bractlets.

of 2–5+ lance-deltate to filiform bractlets (lengths 1/5–1/2 phyllaries).

4–10+ in open, cymiform arrays.

nodding, 6–10+ in racemiform-paniculiform arrays.

densely hairy.

glabrous.

= 40.