Flora of North America species comparison

1, glabrous or leaf axils sparsely tomentose.

1, densely lanate-tomentose proximally, floccose-tomentose to glabrescent distally.

(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) petiolate;

blades lanceolate to narrowly ovate or elliptic, 40–120+ × 20–50+ mm, bases tapering, sometimes oblique, margins subentire, crenate, or serrate-dentate.

gradually reduced (± sessile; lacerate to subcrenate).

gradually reduced (± petiolate or sessile, weakly clasping; dentate to pinnately lobed).

bracteate, glabrous.

bracteate, sparsely to densely tomentose.

8–13;

corolla laminae 4–7 mm.

10 or 13;

corolla laminae 6–8+ mm.

50–70+;

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

50–60+;

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

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

13 or 21, light green, 5–8 mm, usually glabrous (sometimes hairy proximally).

conspicuous.

inconspicuous.

8–20+ in loose, corymbiform arrays.

10–30+ in open, corymbiform arrays (more in robust individuals).

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

1–1.5 mm, hispid;

pappi 5–7 mm.

= 44.

= 46.