Flora of North America species comparison

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

1 or 2–4, clustered, bases sparsely floccose-tomentose or glabrous, 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.

(and proximal cauline, turgid) petiolate;

blades elliptic to ovate or subreniform, 20–40+ × 15–30+ mm, bases cuneate to subcordate, margins subentire or crenate to crenate-dentate.

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

gradually reduced (sessile; pinnately lobed, sinuses deep, rounded, ultimate margins entire or subentire).

ebracteate or bracteate (bractlets inconspicuous), glabrous.

ebracteate (or bractlets short), glabrous or sparsely hairy.

8 or 13;

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

0.

60–80+;

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

45–65+;

corolla tubes 3–4 mm, limbs 2–3 mm.

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

13 or 21, green (tips cyanic), 6–8+ mm, glabrous.

0 or inconspicuous.

inconspicuous.

7–15+ in open, corymbiform arrays.

6–20 in open or compact, corymbiform arrays.

1–1.5 mm, glabrous;

pappi 3–5 mm.

1–2 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 46.