Flora of North America species comparison

1, glabrous or sparsely tomentose.

usually 1, rarely 2–3, clustered, glabrous.

(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 (petioles narrow);

blades narrowly lanceolate or ovate to oblong-ovate, 20–60+ × 10–40+ mm, bases abruptly contracted to tapering, margins subentire to crenate-dentate.

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

gradually reduced (sessile, weakly clasping; lanceolate to oblong or sublyrate, often pinnately lobed).

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

ebracteate or bracteate (bractlets inconspicuous), glabrous.

(8–)13;

corolla laminae 6–10+ mm.

8 or 13;

corolla laminae (deep yellow to orange-red) 6–8+ mm.

35–50+;

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

60–80+;

corolla tubes 4.5–5.5 mm, limbs 2.5–3.5 mm.

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

13 or 21, light green (or tips cyanic), 4–8 mm, glabrous.

conspicuous (bractlets narrow, red-tinged).

0 or inconspicuous.

1–4+ in corymbiform arrays.

7–15+ in open, corymbiform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, glabrous;

pappi 3–5 mm.

= 46.

= 46.