Flora of North America species comparison

1 or 2–5, clustered, usually glabrous, sometimes sparsely floccose-tomentose proximally and in leaf axils.

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

(and proximal cauline, relatively thick and turgid) petiolate;

blades spatulate to oblanceolate, or ovate to orbiculate, 20–40+ × 10–30+ mm, bases tapering to abruptly contracted or subcordate, margins entire, crenate, dentate, or weakly lobulate (faces usually glabrous, sometimes hairy).

(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 to abruptly reduced (± petiolate or sessile; entire or subentire).

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).

bracteate, glabrous or sparsely tomentose.

inconspicuously bracteate or ebracteate, glabrous.

8 or 13;

corolla laminae 5–10 mm.

8 or 13;

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

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

45–60+;

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

(8–)13 or 21, green (tips sometimes cyanic), 4–7+ mm, glabrous.

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

conspicuous.

conspicuous (bases of bractlets swollen).

2–20+ in loose, corymbiform or subumbelliform arrays.

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

1–2.5 mm, glabrous;

pappi 3–6 mm.

0.75–1.5 mm, glabrous, pappi 3–4 mm.

= 46, 92.

= 46.