Flora of North America species comparison

glabrous or sparsely tomentose (especially distally).

glabrous.

usually 1 (relatively thin, delicate).

usually single.

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 (basal and proximal withering before flowering); petiolate (petioles purplish, weakly winged, 4–5 cm);

blades broadly triangular-ovate to suborbiculate, 2–4(–5) × 2.5–3 cm, bases truncate to ± cuneate, margins coarsely spinulose-dentate (mid leaves similar, persistent).

0 or 1–5;

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

“few”;

corolla laminae ca. 7 mm (inconspicuous, equaling or barely surpassing phyllaries).

± 8 or ± 13, 5–6 mm, tips greenish.

± 13, 7–9 mm, tips green.

0 or of 1–3+ lance-deltate bractlets.

of “few,” linear bractlets.

4–10+ in open, cymiform arrays.

nodding, 4–6.

densely hairy.

glabrous.

= 40.