Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

1 or 2–3, clustered, glabrous or glabrate.

(and proximal cauline) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

(relatively thick and turgid) petiolate;

blades elliptic-ovate, ovate, or subreniform, 20–40+ × 10–30+ mm, bases tapering to subcordate, margins dentate to crenate (proximal cauline leaves petiolate; margins dissected to pinnatifid).

gradually reduced (± sessile; lacerate to subcrenate).

gradually reduced (sessile, subentire).

bracteate, glabrous.

bracteate (bractlets cyanic or reddish), glabrous or sparsely tomentose distally.

8–13;

corolla laminae 4–7 mm.

0 or 8–13;

corolla laminae (deep orange-yellow) 5–7 mm.

50–70+;

corolla tubes 3.5–4 mm, limbs 3–3.5 mm.

60–80+;

corolla tubes 1.5–2.5 mm, limbs 2.5–3.5 mm.

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

13 or 21, deep red or green (then tips deep red to purple), 7–10 mm, glabrous.

conspicuous.

conspicuous (bractlets deep red or at least apices deep red to purple).

8–20+ in loose, corymbiform arrays.

1–6+ in open to compact, subumbelliform arrays.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

1–1.5 mm, glabrous;

pappi 3–4.5 mm.

= 44.

= 46, 130+.