Flora of North America species comparison

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

1, irregularly lanate or 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) petiolate;

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

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

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

bracteate, distally tomentose.

bracteate, lanate or tomentose distally.

8 or 13;

corolla laminae 5–7+ mm.

8–10(–13);

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

45–60+;

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

35–65+;

corolla tubes 4–5 mm, limbs 5–6 mm.

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

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

inconspicuous.

conspicuous.

20–70(–100+) in corymbiform arrays.

1–3+.

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1.5–2.5 mm, glabrous;

pappi 8–11 mm.

= 44.

= 40, 46, 92.