Flora of North America species comparison

1 (striated, frequently hollow, often pink- to purple-tinged), glabrous or leaf axils sparsely tomentose.

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

(and proximal cauline) obscurely petiolate;

blades obovate to oblanceolate, sometimes lyrate (lateral lobes to 5 pairs, terminal lobes larger than laterals), 50–150+ × 10–30+ mm, bases tapering, ultimate margins crenate to irregularly undulate.

(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 (weakly clasping, similar to basal).

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 bases tomentose.

inconspicuously bracteate or ebracteate, glabrous.

(8–)13;

corolla laminae 7–9 mm.

8 or 13;

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

35–50+;

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

45–60+;

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

(13–)21, green, 5–7 mm, glabrous.

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

conspicuous (bractlets 2.5–4 mm).

conspicuous (bases of bractlets swollen).

8–30+ in umbelliform or cymiform arrays (robust plants with multiple arrays).

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

1–1.5 mm, sparsely hirtellous on ribs or glabrous;

pappi 3–4 mm.

0.75–1.5 mm, glabrous, pappi 3–4 mm.

= 46.

= 46.