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 (often purplish), sparsely lanate or arachno-tomentose, glabrescent.

(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).

petiolate;

blades lyrate to sublyrate (midribs winged) or ovate to orbiculate, 10–20+ × 30–50+ mm, bases tapering to contracted, ultimate margins ± dentate (faces glabrate at flowering).

gradually reduced (sessile; lanceolate to oblanceolate, entire or wavy).

gradually reduced (sessile; usually bractlike and entire, sometimes larger and pinnatifid).

0 (or relatively reduced, then densely tomentose).

conspicuously bracteate (bractlets red-tipped), densely lanate-tomentose.

(5–)8;

corolla laminae 8–10+ mm.

8 or 13;

corolla laminae 5–10 mm.

35–45+;

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

30–40+;

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

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

13 or 21, purplish, 6–9 mm, sparsely tomentose.

inconspicuous (bractlets red-tipped).

conspicuous (bractlets reddish or purple).

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

borne singly or 2–6 in compact, cymiform arrays.

1–1.5 mm, glabrous;

pappi 5–6 mm.

1.5–2 mm, glabrous;

pappi 5–6 mm.

= 46.

= 46.