Flora of North America species comparison

glabrous.

(sometimes purple-tinged) glabrous.

1–(2–4).

usually 1 (freely branching upward).

(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).

equally distributed; petiolate;

blades ovate to obovate, 2–6 × 0.5–2(–4) cm, bases tapered, margins coarsely lobed or irregularly dentate (mid and distal leaves similar, bases expanded, truncate to cordate, clasping, 1–2 cm across).

± 8 or ± 13;

corolla laminae 5–12 mm.

0 or 1–3+;

corolla laminae 0.1–1 mm (little expanded, barely, if at all, surpassing phyllaries; sometimes laminae 0 and heads perhaps technically disciform).

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

± 8 or ± 13, 6–7 mm, tips green.

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

of 3–5+ lance-linear bractlets.

(1–)4–12 in corymbiform arrays.

3–10 in loose, cymiform arrays.

glabrous.

hairy.

= 40.

= 40.