Flora of North America species comparison

1, glabrous or sparsely tomentose.

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

(and proximal cauline) petiolate;

blades ovate, oblanceolate, or spatulate, 10–30 × 5–20 mm, bases tapering, sometimes obtuse, margins entire, subentire, or dentate.

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).

abruptly reduced (sessile, clasping; bractlike, entire).

gradually reduced (becoming sessile, sometimes clasping).

bracteate (bractlets red-tinged), densely lanate-tomentose.

bracteate, glabrous.

(8–)13;

corolla laminae 6–10+ mm.

0, 8, or 13;

corolla laminae 6–10+ mm.

35–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

70–80+;

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

(13–)21, green (tips red or dark red), densely tomentose proximally.

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

conspicuous (bractlets narrow, red-tinged).

inconspicuous.

1–4+ in corymbiform arrays.

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

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 40, 44, 46, 80.