Flora of North America species comparison

nearly always glaucous, glabrous.

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

single or clustered.

single or loosely clustered.

(thickish and turgid) progressively reduced distally;

petiolate;

blades ovate or obovate to lanceolate, 4–9(–15+) × 1.5–3(–4+) cm, bases tapered, margins wavy or subentire (often with callous denticles; mid and distal leaves sessile, 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).

8–10;

corolla laminae 4–10 mm.

0.

± 13 (± 21), 6–9 mm, tips green to brownish (not blackened).

± 8, 6–9 mm, tips green.

of 1–3+ oblong to lance-linear bractlets (less than 3 mm).

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

(3–)8–24+ in corymbiform arrays.

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

glabrous.

glabrous.

= 40.