Flora of North America species comparison

simple or branched among heads.

(1 or relatively few) simple or branched.

(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).

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.

turbinate to narrowly campanulate.

hemispheric.

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

9–17;

corollas yellow-orange.

20–50;

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

anthers yellow.

corollas yellow;

anthers yellow.

8–20, linear to narrowly lanceolate.

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

(1–)3–9(–14; often nodding in bud).

1–5.

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

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

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

pappi white, bristles barbellate.

= 38, 57, 76.

= 38.