Flora of North America species comparison

usually simple, sometimes branched.

simple or branched among heads.

2–4(–6) pairs, mostly cauline (basal often persistent on sterile rosettes);

petiolate;

blades cordate or subcordate to ovate, 3–10 × 2–10 cm, margins dentate to coarsely dentate, apices acute to rounded, faces puberulent to sparsely villous, sometimes stipitate-glandular (especially adaxial).

(2–)3–4 pairs, basal and cauline (basal usually withered by flowering, petiolate or subsessile, blades ovate or nearly round to oblong-ovate, much smaller than cauline; sterile rosettes often present, proximal cauline often crowded toward stems bases);

petiolate;

blades broadly to narrowly lanceolate, oblong-ovate, ovate-lanceolate, or round, 4–22 × 1–6 cm, (bases obtuse or cuneate to truncate) margins usually entire, sometimes sparsely denticulate, faces scantily to moderately pilose (hairs white), adaxial sparsely stipitate-glandular (distal cauline leaves sessile, extremely reduced, nearly linear to narrowly elliptic-lanceolate).

broadly campanulate.

turbinate to narrowly campanulate.

6–13;

corollas yellow.

usually 0 (sometimes peripheral florets pistillate; corollas yellow, laminae rudimentary).

corollas yellow;

anthers yellow.

20–50;

corollas yellow (1 or more lobes sometimes expanded, giving appearance of laminae);

anthers yellow.

10–20, narrowly ovate to lanceolate.

8–20, linear to narrowly lanceolate.

1, or 3–5(–10).

(1–)3–9(–14; often nodding in bud).

dark gray, 5–10 mm, sparsely to densely hirsute (hairs duplex), sometimes stipitate-glandular as well;

pappi white, bristles barbellate.

brown to black, 4–7 mm, glabrous or sparsely stipitate-glandular to densely hirsute;

pappi usually stramineous, rarely tawny, bristles barbellate to ± subplumose.

= 38, 57, 76, 95, 114.

= 38, 57, 76.