Flora of North America species comparison

1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils.

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

(and proximal cauline) petiolate;

blades obovate or lyrate (pinnately lobed, lateral lobes 2–6+ pairs, their bases petioluliform, terminal lobes larger than laterals, midribs narrowly winged), 60–160+ × 20–40+ mm, bases wide, ultimate margins sharply dentate, crenate-dentate, or irregularly incised.

(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; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised).

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).

ebracteate, glabrous.

inconspicuously bracteate or ebracteate, glabrous.

(8–)13;

corolla laminae 6–10+ mm.

8 or 13;

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

60–70+;

corolla tubes 2–3 mm, limbs 3.5–4.5 mm.

45–60+;

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

(13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy).

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

inconspicuous.

conspicuous (bases of bractlets swollen).

15–40+ in open, cymiform arrays.

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

1.5–2 mm, glabrous or ± scabrellous;

pappi 5.5–6.5 mm.

0.75–1.5 mm, glabrous, pappi 3–4 mm.

= 92.

= 46.