Flora of North America species comparison

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

1, glabrous or sparsely tomentose.

(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.

(and proximal cauline) petiolate;

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

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

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

ebracteate or bracteate (bractlets inconspicuous), glabrous.

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

8 or 13;

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

(8–)13;

corolla laminae 6–10+ mm.

60–80+;

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

35–50+;

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

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

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

0 or inconspicuous.

conspicuous (bractlets narrow, red-tinged).

7–15+ in open, corymbiform arrays.

1–4+ in corymbiform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 46.