Flora of North America species comparison

glabrous or sparsely tomentose (especially distally).

closely lanate to floccose-tomentose, unevenly glabrescent.

usually 1 (relatively thin, delicate).

usually single, rarely 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).

reduced distally; obscurely petiolate;

blades oblanceolate to lanceolate, (4–)6–12+ × (1–)1.5–3 cm, bases tapering to winged petioles, margins dentate to denticulate (denticles dark, cartilaginous; mid and distal leaves smaller, bractlike).

0 or 1–5;

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

usually ± 5, sometimes 0;

corolla laminae 5–8(–10) mm.

± 8 or ± 13, 5–6 mm, tips greenish.

± 13, 3–5 mm, tips usually black.

0 or of 1–3+ lance-deltate bractlets.

0 or of 1–3+ lance-deltate to lance-linear bractlets (mostly less than 1 mm).

4–10+ in open, cymiform arrays.

(10–)14–24(–30+) in corymbiform arrays.

densely hairy.

glabrous.

= 40.