Flora of North America species comparison

solitary to densely clumped, simple or branched among heads.

(1 or relatively few) simple or 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.

3–6 pairs, crowded toward stem bases (axils lacking tufts of brown wool); petiolate (petioles, at least basal, narrowly winged);

blades (with 3 or 5, prominent, subparallel veins) oblanceolate to narrowly oblong, 3.5–14.5 × 0.6–2.4 cm, margins usually entire, rarely denticulate, apices obtuse, faces uniformly hairy, stipitate-glandular.

narrowly campanulate to turbinate.

hemispheric.

(5–)7–17(–20);

corollas yellow.

9–17;

corollas yellow-orange.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

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

13–20, usually narrowly, sometimes broadly, lanceolate.

(1–)3–10(–20).

1–5.

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

pappi tawny, bristles subplumose.

brown, 3.5–5 mm, densely hirsute, sometimes sparingly glandular as well;

pappi white, bristles barbellate.

= 38.