Flora of North America species comparison

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

1 or 2–3+, clustered, glabrous or leaf axils tomentose.

(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).

petiolate;

blades cordate to reniform, 20–60 × 20–60 mm, bases abruptly contracted or ± cordate, margins crenate to crenate-serrate (apices rounded, faces glabrous).

gradually reduced (sessile; bractlike, entire).

gradually reduced (petiolate or sessile, not clasping; blades oblong to lyrate, lateral lobes 2–4 pairs).

bracteate, irregularly tomentose.

bracteate, glabrous or sparsely tomentose.

8–13;

corolla laminae 8–10 mm.

(8–)10–13;

corolla laminae 8–10+ mm.

60–75+;

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

55–70+;

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

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

13–21, green (tips purple or black), 6–8 mm, glabrous or sparsely tomentose proximally.

inconspicuous.

inconspicuous.

3–6 in cymiform arrays.

6–20+ in corymbiform to subumbelliform arrays.

2–2.5 mm, glabrous;

pappi 5–7 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 44.