Flora of North America species comparison

1 or 2–5, loosely clustered, bases densely tomentose, leaf axils usually tomentose.

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

petiolate;

blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).

(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 (petiolate or sessile; elliptic to lanceolate, often pinnatifid).

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

bracteate, distally tomentose.

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

8 or 13;

corolla laminae 5–7+ mm.

0.

45–60+;

corolla tubes 1.5–2 mm, limbs 1.5–2 mm.

45–65+;

corolla tubes 3–4 mm, limbs 2–3 mm.

13 or 21, light green, 3–5 mm, glabrous.

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

inconspicuous.

inconspicuous.

20–70(–100+) in corymbiform arrays.

6–20 in open or compact, corymbiform arrays.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1–2 mm, glabrous;

pappi 4.5–5.5 mm.

= 44.

= 46.