Flora of North America species comparison

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

usually 1, rarely 2–3, loosely clustered, 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 ovate, obovate, or elliptic, 20–40+ × 10–30+ mm, bases tapering to contracted, margins subentire to crenate-dentate.

gradually reduced (± petiolate or sessile).

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.

8–10(–13);

corolla laminae 5–8+ mm.

13;

corolla laminae 7–12+ mm.

45–60+;

corolla tubes 3–3.5 mm, limbs 4–5 mm.

40–55+;

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

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

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

inconspicuous.

(bractlets frequently cyanic).

4–15+ in corymbiform arrays.

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

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

pappi 5–6 mm.

1.5–2.5 mm, glabrous;

pappi 4–6 mm.

= 46.

= 46, 90.