Flora of North America species comparison

(sometimes purplish-tinged) floccose-tomentose, unevenly glabrescent.

sparsely and unevenly tomentose, glabrescent except in leaf axils and among heads.

single or loosely clustered (erect or arching).

(often purplish-tinged) usually single, sometimes loosely clustered.

mostly cauline;

petiolate (petioles about equaling blades);

blades lanceolate or oblanceolate to ovate, (2–)4–8+ × 1.5–3 cm, bases tapered, margins denticulate (distal leaves smaller, lanceolate or linear-lanceolate, bractlike).

± evenly distributed (basal often withering before flowering);

petiolate (sometimes obscurely);

blades ovate to broadly ovate (usually 1–3-pinnate, lobes mostly obovate to spatulate), (4–)7–20(–30) × (1–)2–5(–12) cm, bases usually tapered, ultimate margins dentate (distal leaves similar, smaller).

± 13;

corolla laminae ± 15 mm.

± 13;

corolla laminae 8–12 mm.

usually ± 21, sometimes ± 13, (8–)10–15 mm, tips usually greenish (often sparsely hairy).

± 13, 3–4(–5) mm, tips black or greenish.

of 4–8 lanceolate to lance-linear bractlets (lengths mostly less than 1/2 phyllaries).

of 2–6 (inconspicuous) bractlets (less than 2 mm).

nodding, 1(–2).

(10–)20–60+ in corymbiform arrays.

glabrous.

all sparsely hairy or ray cypselae glabrous.

= 40.

= 40.