Flora of North America species comparison

solitary to densely clumped, simple or branched among heads.

usually simple, rarely 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, mostly cauline; petiolate (petioles, at least proximal, relatively narrow, ± equaling blades);

blades narrowly to broadly lanceolate or ovate, 3.5–14 × 0.5–3.7 cm, margins regularly dentate or denticulate, apices acute, faces glabrous or moderately pilose, sparsely to densely stipitate-glandular.

narrowly campanulate to turbinate.

campanulate-turbinate.

(5–)7–17(–20);

corollas yellow.

6–17;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

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

6–14, lanceolate (apices acute).

(1–)3–10(–20).

3–8 (erect).

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

pappi tawny, bristles subplumose.

gray to brown, 3–6 mm, densely hirsute, sometimes stipitate-glandular;

pappi white, bristles barbellate.

= 38, 57, 76.