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, loosely 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).

petiolate;

blades ovate, obovate, or elliptic, 20–40+ × 10–30+ mm, bases tapering to contracted, margins subentire to crenate-dentate.

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

abruptly reduced (sessile, often weakly clasping, dentate to subentire; distals sessile, lanceolate, weakly clasping, entire or dentate).

bracteate, glabrous or sparsely tomentose.

sparsely bracteate or ebracteate, glabrous.

8 or 13;

corolla laminae 5–10 mm.

13;

corolla laminae 7–12+ mm.

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

40–55+;

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

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

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

conspicuous.

(bractlets frequently cyanic).

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

1(–5; sometimes subtended by 2 relatively large bractlets).

1–2.5 mm, glabrous;

pappi 3–6 mm.

1.5–2.5 mm, glabrous;

pappi 4–6 mm.

= 46, 92.

= 46, 90.