Flora of North America species comparison

1 or 2–3, clustered, densely lanate-tomentose or canescent, tufts of arachnoid tomentum in leaf axils, or glabrescent.

1 (often cyanic), glabrous.

(thick, leathery) petiolate;

blades narrowly lanceolate or oblanceolate, 25–100+ × 5–20 mm, bases tapering, margins entire, subentire, dentate, or wavy (adaxial faces early glabrescent).

(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 (sessile; lanceolate to oblanceolate, entire or wavy).

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

0 (or relatively reduced, then densely tomentose).

ebracteate, glabrous.

(5–)8;

corolla laminae 8–10+ mm.

8 or 13;

corolla laminae 8–10+ mm.

35–45+;

corolla tubes 2.5–3.5 mm, limbs 3.5–4.5 mm.

40–50+;

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

(8–)13, green (tips red), 3–6 mm, densely tomentose proximally, glabrate distally.

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

inconspicuous (bractlets red-tipped).

conspicuous (bractlets often cyanic).

10–30+ in open or congested, cymiform arrays.

borne singly.

1–1.5 mm, glabrous;

pappi 5–6 mm.

1.5–2.5 mm, glabrous;

pappi 4–5.5 mm.

= 46.