Flora of North America species comparison

1 or multiple, clustered, usually glabrous, rarely sparsely floccose-tomentose, leaf axils sometimes tomentose.

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

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

blades lanceolate or narrowly oblanceolate, 20–40+ × 5–15 mm, bases tapering, margins usually entire, sometimes sub-pinnatisect (apices subentire or dentate).

(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 (± petiolate or sessile).

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.

8–10(–13);

corolla laminae 5–8+ mm.

8 or 13;

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

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

45–60+;

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

13 or 21, green, 6–10 mm, sparsely tomentose proximally, glabrous distally.

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

inconspicuous.

conspicuous (bases of bractlets swollen).

4–15+ in corymbiform arrays.

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

1.5–2.5 mm, glabrous or sparsely hirtellous on ribs;

pappi 5–6 mm.

0.75–1.5 mm, glabrous, pappi 3–4 mm.

= 46.

= 46.