Flora of North America species comparison

glabrous.

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

1–(2–4).

single (turgid).

(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 (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).

± 8 or ± 13;

corolla laminae 5–12 mm.

usually ± 21, rarely 0;

corolla laminae 20–25 mm.

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

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

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

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

(1–)4–12 in corymbiform arrays.

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

glabrous.

glabrous.

= 40.

= 40.