Flora of North America species comparison

1, glabrous or sparsely tomentose.

1 or 2–3, loosely clustered, glabrous or glabrate.

(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 elliptic-ovate, oblong, or subreniform, 20–50 × 10–40+ mm, bases subcordate, truncate, or cuneate, margins usually crenate-dentate to coarsely dentate-lacerate, seldom subentire.

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

gradually reduced (petiolate, resembling basals, sublyrate or dissected; distal sessile, subentire to pinnatifid).

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

ebracteate (or bractlets inconspicuous), glabrous or glabrate.

(8–)13;

corolla laminae 6–10+ mm.

0 or 8–10;

corolla laminae (deep yellow) 3–5 mm.

35–50+;

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

60–70+;

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

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

13 or 21, green (tips sometimes reddish), 7–9 mm, glabrous.

conspicuous (bractlets narrow, red-tinged).

conspicuous (bractlets green, tips sometimes reddish).

1–4+ in corymbiform arrays.

8–20+ in subumbelliform arrays.

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–2 mm, glabrous;

pappi 3–4 mm.

= 46.

= 46, 126, 176, 184.