Flora of North America species comparison

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

1 or multiple, loosely clustered, usually glabrous, sometimes tomentose proximally and in leaf axils.

(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;

blades orbiculate, ovate, or obovate, 40–100+ × 20–80+ mm, bases tapering, rounded, or abruptly contracted, margins crenate, dentate, or serrate.

gradually reduced (± petiolate or sessile).

gradually reduced (sessile, clasping; pinnatisect or sublyrate).

bracteate, glabrous or sparsely tomentose.

bracteate, glabrous or proximally tomentose.

8–10(–13);

corolla laminae 5–8+ mm.

8–13(–21);

corolla laminae 7–10 mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

13 or 21, green (tips sometimes reddish), 3–6 mm, glabrous or floccose-tomentose proximally.

inconspicuous.

conspicuous.

4–15+ in corymbiform arrays.

6–15+ in open or congested, corymbiform arrays.

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

pappi 5–6 mm.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

= 46.

= 44, 88, 90.