Flora of North America species comparison

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

1 or 2–5+, loosely clustered, glabrous or leaf axils sparsely 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.

(and proximal cauline) petiolate;

blades narrowly lanceolate (pinnatifid, lateral lobes 6+ pairs, their bases petioluliform, terminal lobes smaller than laterals), 60–100 × 10–20 mm, bases tapering, ultimate margins dentate.

gradually reduced (sessile, weakly clasping; lanceolate to oblong or sublyrate, often pinnately lobed).

gradually reduced (sessile).

ebracteate or bracteate (bractlets inconspicuous), glabrous.

bracteate or ebracteate, glabrous.

8 or 13;

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

(8–)13;

corolla laminae 8–10+ mm.

60–80+;

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

40–55+;

corolla tubes 2–3 mm, limbs 2–3 mm.

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

(13–)21, green (tips yellow), 4–6+ mm, glabrous.

0 or inconspicuous.

inconspicuous.

7–15+ in open, corymbiform arrays.

6–20+ in corymbiform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

1–1.5 mm, hirtellous on ribs;

pappi 3.5–4.5 mm.

= 46.