Flora of North America species comparison

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

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

(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.

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 (sessile, clasping; pinnatisect or sublyrate).

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

bracteate, glabrous or proximally tomentose.

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

8–13(–21);

corolla laminae 7–10 mm.

8 or 13;

corolla laminae 5–10 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

30–40+;

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

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

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

conspicuous.

conspicuous (bractlets reddish or purple).

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

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

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 44, 88, 90.

= 46.