Flora of North America species comparison

glabrous.

loosely arachno-tomentose, unevenly glabrescent.

1–(2–4).

single or clustered.

(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).

progressively reduced distally; weakly petiolate;

blades lanceolate to narrowly oblanceolate, 10–18+ × 1–2(–3+) cm, bases tapered, margins entire or wavy (often with dark, cartilaginous denticles; mid leaves similar, smaller, sessile; distal leaves bractlike).

± 8 or ± 13;

corolla laminae 5–12 mm.

± 13;

corolla laminae (5–)15–20 mm.

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

± 21, 9–12(–14) mm, tips not notably blackened (short-hairy).

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

of 5–8+ linear to filiform bractlets (lengths 1/2–7/8+ phyllaries).

(1–)4–12 in corymbiform arrays.

usually 1 (sometimes subtended by 1–2 smaller heads).

glabrous.

glabrous.

= 40.

= 40.