Flora of North America species comparison

1 or 2–3, clustered, densely lanate-tomentose or canescent, tufts of arachnoid tomentum in leaf axils, or glabrescent.

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

(thick, leathery) petiolate;

blades narrowly lanceolate or oblanceolate, 25–100+ × 5–20 mm, bases tapering, margins entire, subentire, dentate, or wavy (adaxial faces early glabrescent).

(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; lanceolate to oblanceolate, entire or wavy).

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

0 (or relatively reduced, then densely tomentose).

bracteate, sparsely to densely tomentose.

(5–)8;

corolla laminae 8–10+ mm.

10 or 13;

corolla laminae 6–8+ mm.

35–45+;

corolla tubes 2.5–3.5 mm, limbs 3.5–4.5 mm.

50–60+;

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

(8–)13, green (tips red), 3–6 mm, densely tomentose proximally, glabrate distally.

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

inconspicuous (bractlets red-tipped).

inconspicuous.

10–30+ in open or congested, cymiform arrays.

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

1–1.5 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, hispid;

pappi 5–7 mm.

= 46.

= 46.