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 or multiple, loosely clustered, usually glabrous, sometimes tomentose proximally and in leaf axils.

(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).

(and proximal cauline) petiolate;

blades orbiculate, ovate, or obovate, 40–100+ × 20–80+ mm, bases tapering, rounded, or abruptly contracted, margins crenate, dentate, or serrate.

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

gradually reduced (sessile, clasping; pinnatisect or sublyrate).

0 (or relatively reduced, then densely tomentose).

bracteate, glabrous or proximally tomentose.

(5–)8;

corolla laminae 8–10+ mm.

8–13(–21);

corolla laminae 7–10 mm.

35–45+;

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

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

13 or 21, green (tips sometimes reddish), 3–6 mm, glabrous or floccose-tomentose proximally.

inconspicuous (bractlets red-tipped).

conspicuous.

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

6–15+ in open or congested, corymbiform arrays.

1–1.5 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

= 46.

= 44, 88, 90.