Flora of North America species comparison

1, irregularly lanate or tomentose.

1, glabrous or leaf axils sparsely tomentose.

(and proximal cauline) petiolate;

blades orbiculate, ovate, oblanceolate, or rhombic, 20–50+ × 20–40+ mm, bases tapering, sometimes obtuse, margins coarsely dentate to crenate-dentate.

(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).

gradually to abruptly reduced (petioles broad-winged, clasping, blades obovate, bases tapering, margins irregularly dentate; distal sessile, linear to lanceolate, entire).

gradually reduced (± sessile; lacerate to subcrenate).

bracteate, lanate or tomentose distally.

bracteate, glabrous.

8–10(–13);

corolla laminae (red-orange) 8–15+ mm.

8–13;

corolla laminae 4–7 mm.

35–65+;

corolla tubes 4–5 mm, limbs 5–6 mm.

50–70+;

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

21, green (tips sometimes deep red), 8–10+ mm, densely tomentose proximally, sparsely tomentose distally.

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

conspicuous.

conspicuous.

1–3+.

8–20+ in loose, corymbiform arrays.

1.5–2.5 mm, glabrous;

pappi 8–11 mm.

1–1.5 mm, glabrous;

pappi 5–5.5 mm.

= 40, 46, 92.

= 44.