Flora of North America species comparison

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

1 (often purplish), sparsely lanate or arachno-tomentose, glabrescent.

(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).

petiolate;

blades lyrate to sublyrate (midribs winged) or ovate to orbiculate, 10–20+ × 30–50+ mm, bases tapering to contracted, ultimate margins ± dentate (faces glabrate at flowering).

gradually reduced (± petiolate or sessile).

gradually reduced (sessile; usually bractlike and entire, sometimes larger and pinnatifid).

bracteate, glabrous or sparsely tomentose.

conspicuously bracteate (bractlets red-tipped), densely lanate-tomentose.

8–10(–13);

corolla laminae 5–8+ mm.

8 or 13;

corolla laminae 5–10 mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

30–40+;

corolla tubes 2–3 mm, limbs 2.5–3.5 mm.

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

13 or 21, purplish, 6–9 mm, sparsely tomentose.

inconspicuous.

conspicuous (bractlets reddish or purple).

4–15+ in corymbiform arrays.

borne singly or 2–6 in compact, cymiform arrays.

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

pappi 5–6 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 46.