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.

usually 1, rarely 2–3, clustered, glabrous.

(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).

(relatively thick and turgid) petiolate (petioles broad-winged or narrow, delicate);

blades ovate, ovate-orbiculate, oblong-lanceolate, orbiculate, suborbiculate, reniform, or subreniform, 10–50+ × 10–40 mm, bases tapering or subcordate to abruptly contracted, margins entire or crenate.

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

gradually reduced (proximal and mid sometimes as large as or larger than basal, sessile, oblanceolate to obovate, sometimes lyrate, sometimes auriculate and/or clasping, subentire to irregularly dissected; distal usually sessile, bractlike, sometimes larger).

0 (or relatively reduced, then densely tomentose).

inconspicuously bracteate or ebracteate, glabrous.

(5–)8;

corolla laminae 8–10+ mm.

8 or 13;

corolla laminae (deep yellow to orange) 5–8+ mm.

35–45+;

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

45–60+;

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

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

(8–)13 or 21, green (tips cyanic), 5–7+ mm, glabrous.

inconspicuous (bractlets red-tipped).

conspicuous (bases of bractlets swollen).

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

1–6+ in congested, corymbiform or subumbelliform arrays.

1–1.5 mm, glabrous;

pappi 5–6 mm.

0.75–1.5 mm, glabrous, pappi 3–4 mm.

= 46.

= 46.