Flora of North America species comparison

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

usually 1, rarely 2–3, clustered, irregularly arachnoid-tomentose to lanate-tomentose or 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.

(and proximal cauline, relatively turgid) petiolate;

blades broadly ovate or lyrate (± pinnately lobed, lateral lobes 1–3 pairs, smaller than terminals), 10–30+ × 10–20+ mm, bases tapering to cuneate, ultimate margins subentire or crenate to coarsely dentate (abaxial faces tomentose).

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

gradually reduced (sessile; bractlike, entire).

bracteate, glabrous or proximally tomentose.

bracteate, irregularly tomentose.

8–13(–21);

corolla laminae 7–10 mm.

8–13;

corolla laminae 8–10 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

60–75+;

corolla tubes 2.5–4 mm, limbs 3.5–5 mm.

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

(8–)13 or 21, green, 7–10+ mm, densely tomentose proximally, glabrescent distally (tips hair-tufted).

conspicuous.

inconspicuous.

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

3–6 in cymiform arrays.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

2–2.5 mm, glabrous;

pappi 5–7 mm.

= 44, 88, 90.

= 46.