Flora of North America species comparison

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

usually 1, sometimes 2–4, clustered, glabrous or sparsely tomentose proximally.

(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 usually broadly lanceolate to ovate, sometimes subhastate, 20–50+ × 20–40+ mm, bases truncate to subcordate or obtuse, margins crenate, denticulate, bluntly dentate, or sharply dentate (proximal cauline leaves petiolate; margins usually pinnately lobed to laciniate, sometimes subentire).

gradually reduced (sessile; bractlike, entire).

gradually reduced (becoming sessile, sometimes clasping).

bracteate, irregularly tomentose.

bracteate, glabrous.

8–13;

corolla laminae 8–10 mm.

0, 8, or 13;

corolla laminae 6–10+ mm.

60–75+;

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

70–80+;

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

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

(13–)21(–30+), light green, 3–8 mm, glabrous.

inconspicuous.

inconspicuous.

3–6 in cymiform arrays.

5–20+ in open or congested, subumbelliform arrays.

2–2.5 mm, glabrous;

pappi 5–7 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 40, 44, 46, 80.