Flora of North America species comparison

solitary to densely clumped, simple or branched among heads.

mostly simple or distally branched.

4–8(–10) pairs, mostly cauline; usually sessile (sometimes with partly connate-sheathing bases), sometimes petiolate (proximalmost);

blades lance-elliptic, lanceolate, oblanceolate, obovate, or ovate, 4–12(–20) × (1–)2–6(–8) cm, margins subentire to dentate-serrate, apices usually acute, rarely obtuse, faces glabrate to pilose.

3–7 pairs, sometimes crowded at stem bases (basal leaves often persistent on sterile rosettes); petiolate (petioles narrow, 1.5–8 cm, often broadly winged on distal reduced leaves);

blades usually ovate to broadly lanceolate, seldom subcordate, 2–12 × 1–7 cm, margins usually serrate to coarsely dentate or crenate, rarely subentire, faces glabrate to pilose, stipitate-glandular.

narrowly campanulate to turbinate.

turbinate-campanulate.

(5–)7–17(–20);

corollas yellow.

usually 0 (corollas of peripheral florets rarely dilated, resembling rays).

corollas yellow;

anthers yellow.

20–50;

corollas yellow;

anthers yellow.

8–15(–19), narrowly to broadly lanceolate.

8–15, ovate-lanceolate to narrowly lanceolate.

(1–)3–10(–20).

3–10(–30; erect).

brown, 4–8 mm, sparsely hirsutulous, stipitate-glandular;

pappi tawny, bristles subplumose.

dark gray, 6–8 mm, hirsute (hairs duplex) and stipitate-glandular;

pappi white, bristles usually barbellate, sometimes subplumose.

= 38, 57, 76.