Flora of North America species comparison

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

1 or 2–3, clustered, bases floccose-tomentose, leaf axils tomentose, glabrous elsewhere.

petiolate;

blades narrowly elliptic to oblanceolate, 30–90+ × 10–20+ mm, bases tapering, margins serrate to crenate-serrate (apices rounded to acute, faces glabrous).

(thick, fleshy) petiolate;

blades usually ovate, oblong, or spatulate, sometimes sublyrate, 20–50+ × 20–40+ mm, bases tapering (to winged petioles) or abruptly contracted to subcordate (petioles narrow), margins crenate, coarsely serrate, or subentire.

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

(often cyanic) gradually reduced (sessile, not clasping; lanceolate to linear, usually irregularly and shallowly lobed, rarely entire).

bracteate, distally tomentose.

conspicuously bracteate, glabrous.

8 or 13;

corolla laminae 5–7+ mm.

10–12;

corolla laminae 8–14+ mm.

45–60+;

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

55–75+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

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

21, deep red or green (tips reddish), 8–12+ mm, white-tomentose proximally.

inconspicuous.

conspicuous (tips of bractlets often purple).

20–70(–100+) in corymbiform arrays.

1–2(–5+).

0.75–1 mm, hirsute on ribs;

pappi 2.5–3 mm.

1–1.25 mm, glabrous;

pappi 4–7 mm.

= 44.

= 160+.