Flora of North America species comparison

1 or 3–5, clustered (often scapiform), usually floccose, lanate-tomentose, or canescent, sometimes glabrate.

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

(either of two forms): usually (1) sessile, sometimes petiolate;

blades narrowly lanceolate to elliptic, 15–40+ × 5–25 mm, bases tapering, margins entire or dentate toward apices (often revolute), sometimes (2) petiolate;

blades ovate to orbiculate, 10–20 × 5–15 mm, bases tapering to abruptly contracted, margins entire or wavy, sometimes dentate toward apices.

(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.

abruptly reduced (bractlike).

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

inconspicuously bracteate, glabrous or densely hairy.

bracteate, glabrous or proximally tomentose.

0, 8, or 13;

corolla laminae 5–10 mm.

8–13(–21);

corolla laminae 7–10 mm.

30–50+;

corolla tubes 2.5–3.5 mm, limbs 3–4 mm.

40–50+;

corolla tubes 2–3 mm, limbs 2–3 mm.

13 or 21, green (tips sometimes cyanic), 4–10 mm, glabrous or hairy.

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

conspicuous (bractlets often cyanic).

conspicuous.

1–5(–8) in cymiform to subumbelliform arrays.

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

1.5–2 mm, glabrous;

pappi 5–6 mm.

1–1.5 mm, glabrous or hirsute on ribs;

pappi 3–6 mm.

= 44, 46.

= 44, 88, 90.