Flora of North America species comparison

1, glabrous or sparsely tomentose.

usually 1 (sometimes more, clustered), glaucous.

(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 to narrowly oblanceolate, 30–100+ × 10–20+ mm, bases tapering, margins entire or subentire.

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

gradually reduced (sessile and weakly clasping; lanceolate, entire).

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

conspicuously bracteate, glaucous.

(8–)13;

corolla laminae 6–10+ mm.

8–10(–13);

corolla laminae 5–7 mm.

35–50+;

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

25–40+;

corolla tubes 2–3 mm, limbs 3–4 mm.

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

(13) 21, green (tips often purple), glabrous.

conspicuous (bractlets narrow, red-tinged).

conspicuous.

1–4+ in corymbiform arrays.

12–20+ in open, corymbiform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, glabrous;

pappi 5–6 mm.

= 46.

= 46.