Flora of North America species comparison

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

1, 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 orbiculate-ovate, orbiculate, obovate, or subreniform, 30–80+ × 30–80+ mm, bases cordate to contracted, margins crenate, dentate, or wavy.

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

abruptly reduced (proximal petiolate or sessile and clasping, broadly lanceolate, irregularly incised or crenate; mid ones sessile, clasping, sometimes auriculate, oblong to hastate, irregularly dentate; distal bractlike, entire).

bracteate, glabrous or sparsely tomentose.

conspicuously bracteate, glabrous.

8 or 13;

corolla laminae 5–10 mm.

usually 8+, rarely 0;

corolla laminae 8–11 mm.

35–60+;

corolla tubes 2–4 mm, limbs 2.5–4 mm.

30–45+;

corolla tubes 4–5 mm, limbs 6–7 mm.

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

13, light green, 5–9+ mm, glabrous.

conspicuous.

conspicuous.

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

3–8 in open, cymiform arrays.

1–2.5 mm, glabrous;

pappi 3–6 mm.

1.5–2 mm, glabrous;

pappi 9–10 mm.

= 46, 92.