Flora of North America species comparison

1 or multiple, clustered, usually glabrous, rarely sparsely floccose-tomentose, leaf axils sometimes tomentose.

1 (often cyanic), glabrous.

(and proximal cauline, relatively thick and turgid) petiolate;

blades lanceolate or narrowly oblanceolate, 20–40+ × 5–15 mm, bases tapering, margins usually entire, sometimes sub-pinnatisect (apices subentire or dentate).

(relatively turgid, abaxial faces cyanic) petiolate;

blades reniform to subreniform, 5–15+ × 5–25+ mm, bases abruptly contracted to cordate, margins usually crenate, sometimes wavy.

gradually reduced (± petiolate or sessile).

abruptly reduced (1–4, sessile; bractlike, entire).

bracteate, glabrous or sparsely tomentose.

ebracteate, glabrous.

8–10(–13);

corolla laminae 5–8+ mm.

8 or 13;

corolla laminae 8–10+ mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

40–50+;

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

13 or 21, green, 6–10 mm, sparsely tomentose proximally, glabrous distally.

13 or 21, deep red, 8–10+ mm, glabrous.

inconspicuous.

conspicuous (bractlets often cyanic).

4–15+ in corymbiform arrays.

borne singly.

1.5–2.5 mm, glabrous or sparsely hirtellous on ribs;

pappi 5–6 mm.

1.5–2.5 mm, glabrous;

pappi 4–5.5 mm.

= 46.