Flora of North America species comparison

1, glabrous or sparsely tomentose.

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

(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, 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).

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

gradually reduced (± petiolate or sessile).

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

bracteate, glabrous or sparsely tomentose.

(8–)13;

corolla laminae 6–10+ mm.

8–10(–13);

corolla laminae 5–8+ mm.

35–50+;

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

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

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

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

conspicuous (bractlets narrow, red-tinged).

inconspicuous.

1–4+ in corymbiform arrays.

4–15+ in corymbiform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

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

pappi 5–6 mm.

= 46.

= 46.