Flora of North America species comparison

1 or multiple, loosely clustered, usually glabrous, sometimes tomentose proximally and in leaf axils.

1 or 3–5, loosely clustered, glabrous or bases and leaf axils tomentose.

(and proximal cauline) petiolate;

blades orbiculate, ovate, or obovate, 40–100+ × 20–80+ mm, bases tapering, rounded, or abruptly contracted, margins crenate, dentate, or serrate.

(and proximal cauline, relatively thick and turgid) petiolate (petioles sometimes winged);

blades elliptic-ovate or suborbiculate to spatulate, 15–25 × 5–20 mm, bases tapering, margins entire or dentate (at apices).

gradually reduced (sessile, clasping; pinnatisect or sublyrate).

abruptly reduced (becoming sessile, bractlike).

bracteate, glabrous or proximally tomentose.

ebracteate, glabrous.

8–13(–21);

corolla laminae 7–10 mm.

(0) or 8–13;

corolla laminae 7–9 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

35–50+;

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

13 or 21, green (tips sometimes reddish), 3–6 mm, glabrous or floccose-tomentose proximally.

13, cyanic, 8–9 mm, glabrous or loosely tomentose proximally.

conspicuous.

inconspicuous.

6–15+ in open or congested, corymbiform arrays.

1–2(–4).

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

1–2 mm, glabrous;

pappi 3–4.5 mm.

= 44, 88, 90.