Flora of North America species comparison

1, glabrous or sparsely tomentose.

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

(and proximal cauline) petiolate;

blades ovate, oblanceolate, or spatulate, 10–30 × 5–20 mm, bases tapering, sometimes obtuse, margins entire, subentire, or dentate.

(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.

abruptly reduced (sessile, clasping; bractlike, entire).

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

bracteate (bractlets red-tinged), densely lanate-tomentose.

bracteate, glabrous or proximally tomentose.

(8–)13;

corolla laminae 6–10+ mm.

8–13(–21);

corolla laminae 7–10 mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

(13–)21, green (tips red or dark red), densely tomentose proximally.

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

conspicuous (bractlets narrow, red-tinged).

conspicuous.

1–4+ in corymbiform arrays.

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

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

= 46.

= 44, 88, 90.