Flora of North America species comparison

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

1 or 2–3+, clustered, glabrous or leaf axils tomentose.

(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.

petiolate;

blades cordate to reniform, 20–60 × 20–60 mm, bases abruptly contracted or ± cordate, margins crenate to crenate-serrate (apices rounded, faces glabrous).

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

gradually reduced (petiolate or sessile, not clasping; blades oblong to lyrate, lateral lobes 2–4 pairs).

bracteate, sparsely to densely tomentose.

bracteate, glabrous or sparsely tomentose.

10 or 13;

corolla laminae 6–8+ mm.

(8–)10–13;

corolla laminae 8–10+ mm.

50–60+;

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

55–70+;

corolla tubes 3–3.5 mm, limbs 2–2.5 mm.

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

13–21, green (tips purple or black), 6–8 mm, glabrous or sparsely tomentose proximally.

inconspicuous.

inconspicuous.

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

6–20+ in corymbiform to subumbelliform arrays.

1–1.5 mm, hispid;

pappi 5–7 mm.

1–1.5 mm, glabrous;

pappi 4.5–5.5 mm.

= 46.

= 44.