Flora of North America species comparison

usually 1, rarely 2–3, clustered, glabrous.

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

(and proximal cauline) petiolate (petioles narrow);

blades narrowly lanceolate or ovate to oblong-ovate, 20–60+ × 10–40+ mm, bases abruptly contracted to tapering, margins subentire to crenate-dentate.

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, weakly clasping; lanceolate to oblong or sublyrate, often pinnately lobed).

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

ebracteate or bracteate (bractlets inconspicuous), glabrous.

bracteate, glabrous or sparsely tomentose.

8 or 13;

corolla laminae (deep yellow to orange-red) 6–8+ mm.

(8–)10–13;

corolla laminae 8–10+ mm.

60–80+;

corolla tubes 4.5–5.5 mm, limbs 2.5–3.5 mm.

55–70+;

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

13 or 21, light green (or tips cyanic), 4–8 mm, glabrous.

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

0 or inconspicuous.

inconspicuous.

7–15+ in open, corymbiform arrays.

6–20+ in corymbiform to subumbelliform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 44.