Flora of North America species comparison

glabrous.

glabrous or sparsely tomentose (especially distally).

1–(2–4).

usually 1 (relatively thin, delicate).

(thickish-turgid) progressively reduced distally; petiolate;

blades broadly lanceolate to subelliptic, 2.5–15 × 1–5 cm, bases tapered, margins sharply dentate to subentire (some teeth callous; mid leaves sometimes larger than proximal; distal leaves sessile, smaller, often clasping).

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).

± 8 or ± 13;

corolla laminae 5–12 mm.

0 or 1–5;

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

(± 8) ± 13 or ± 21, 5–9 mm, tips black (villous).

± 8 or ± 13, 5–6 mm, tips greenish.

of (1–)3–6 linear to filiform bractlets (lengths to 1/3 phyllaries).

0 or of 1–3+ lance-deltate bractlets.

(1–)4–12 in corymbiform arrays.

4–10+ in open, cymiform arrays.

glabrous.

densely hairy.

= 40.

= 40.