Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

1 or 2–5, clustered, usually glabrous, sometimes sparsely floccose-tomentose proximally and in leaf axils.

(and proximal cauline) petiolate;

blades narrowly ovate to oblong-lanceolate, 30–70+ × 10–20+ mm, bases abruptly contracted to subcordate, margins usually serrate-dentate, sometimes subcrenate (apices acute).

(and proximal cauline, relatively thick and turgid) petiolate;

blades spatulate to oblanceolate, or ovate to orbiculate, 20–40+ × 10–30+ mm, bases tapering to abruptly contracted or subcordate, margins entire, crenate, dentate, or weakly lobulate (faces usually glabrous, sometimes hairy).

gradually reduced (± sessile; lacerate to subcrenate).

gradually to abruptly reduced (± petiolate or sessile; entire or subentire).

bracteate, glabrous.

bracteate, glabrous or sparsely tomentose.

8–13;

corolla laminae 4–7 mm.

8 or 13;

corolla laminae 5–10 mm.

50–70+;

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

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

13 or 21, light green (tips sometimes black), 5–8 mm, glabrous.

(8–)13 or 21, green (tips sometimes cyanic), 4–7+ mm, glabrous.

conspicuous.

conspicuous.

8–20+ in loose, corymbiform arrays.

2–20+ in loose, corymbiform or subumbelliform arrays.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

1–2.5 mm, glabrous;

pappi 3–6 mm.

= 44.

= 46, 92.