Flora of North America species comparison

arachno-tomentose to sericeous-lanate (especially on abaxial faces of phyllaries), unevenly glabrescent.

closely, unevenly lanate-floccose, glabrescent.

single (turgid).

usually multiple (strict or nearly so, arching-erect).

evenly distributed (proximal withering before flowering);

subsessile or petiolate;

blades obovate to oblanceolate, 5–15(–25) × 2–6(–10) cm, bases tapered, margins serrate-dentate to denticulate or subentire (distal leaves slightly smaller).

(often recurved and thickish-turgid) concentrated distally on stems;

sessile or obscurely petiolate;

blades narrowly linear to filiform (2–7 cm × 1 mm), bases ± linear, margins entire.

usually ± 21, rarely 0;

corolla laminae 20–25 mm.

usually ± 8, rarely 0;

corolla laminae 5–10 mm.

± 21, 8–15 mm (sometimes purplish or pinkish-tinged), tips greenish.

± 13, 5–8 mm, tips green or minutely black.

of 6–10 linear bractlets (longest nearly equaling phyllaries).

0 or of 3–5 bractlets (lengths less than 1/2 phyllaries).

1–5(–15+) in corymbiform arrays (involucres notably large, 20–40 mm diam.).

3–10 in corymbiform arrays (involucres weakly campanulate).

glabrous.

glabrous.

= 40.