Flora of North America species comparison

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

1, 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).

petiolate;

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

gradually reduced (± petiolate or sessile).

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.

8–10(–13);

corolla laminae 5–8+ mm.

usually 8+, rarely 0;

corolla laminae 8–11 mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

30–45+;

corolla tubes 4–5 mm, limbs 6–7 mm.

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

13, light green, 5–9+ mm, glabrous.

inconspicuous.

conspicuous.

4–15+ in corymbiform arrays.

3–8 in open, cymiform arrays.

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

pappi 5–6 mm.

1.5–2 mm, glabrous;

pappi 9–10 mm.

= 46.