Flora of North America species comparison

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

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

(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).

(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.

gradually reduced (± petiolate or sessile).

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

bracteate, glabrous or sparsely tomentose.

ebracteate or bracteate (bractlets inconspicuous), glabrous.

8–10(–13);

corolla laminae 5–8+ mm.

8 or 13;

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

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

60–80+;

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

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

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

inconspicuous.

0 or inconspicuous.

4–15+ in corymbiform arrays.

7–15+ in open, corymbiform arrays.

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

pappi 5–6 mm.

1–1.5 mm, glabrous;

pappi 3–5 mm.

= 46.

= 46.