Flora of North America species comparison

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

1 or 2–3, (white) woolly-tomentose.

(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 obovate to oblanceolate or spatulate, 10–20+ × 5–18 mm, bases tapering, margins entire or crenate (abaxial faces densely tomentose, adaxial glabrescent).

gradually reduced (± petiolate or sessile).

gradually reduced (becoming sessile and bractlike).

bracteate, glabrous or sparsely tomentose.

ebracteate.

8–10(–13);

corolla laminae 5–8+ mm.

0.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

not seen.

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

purple-tinged, 7–10 mm, tomentose (ciliate distally, apices with dense tufts of hairs).

inconspicuous.

inconspicuous.

4–15+ in corymbiform arrays.

1–4+, in corymbiform arrays.

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

pappi 5–6 mm.

not seen (reported to be glabrous).

= 46.