Flora of North America species comparison

1 or 2–4, loosely clustered, glabrous or sparsely tomentose proximally.

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

petiolate;

blades lanceolate to narrowly elliptic or oblanceolate, 30–60+ × 10–20+ mm, bases tapering, sometimes obtuse, margins subentire to dentate or serrate.

(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 (proximals petiolate, sublyrate; mids sessile, not clasping, lanceolate, dissected, incised, or lacerate; distals sessile, bractlike).

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).

usually bracteate, sometimes ebracteate, glabrous.

inconspicuously bracteate or ebracteate, glabrous.

0, 8, or 13;

corolla laminae (pale yellow) 5–10+ mm.

8 or 13;

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

50–65+;

corolla tubes 2–3 mm, limbs 2–3 mm.

45–60+;

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

13 or 21, green, 5–8+ mm, glabrous.

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

inconspicuous.

conspicuous (bases of bractlets swollen).

2–10+ in loose or compact, corymbiform arrays.

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

1–2 mm, usually glabrous, sometimes hispidulous on ribs;

pappi 3.5–4.5 mm.

0.75–1.5 mm, glabrous, pappi 3–4 mm.

= 44, 46, 92.

= 46.