Flora of North America species comparison

(forming clumps) simple or branched among heads.

simple or branched.

(2–)3(–4) pairs, mostly cauline (basal sometimes present); petiolate (petioles relatively short, broad-winged) or subsessile;

blades broadly elliptic, lance-elliptic, or narrowly to broadly lanceolate, 4–20 × 1–4 cm, margins entire or irregularly denticulate, apices acute, faces sparsely to moderately hairy (hairs relatively short to long, stipitate glands or soft, silky).

3–5 pairs, sometimes crowded toward bases (basal leaves often persistent on sterile rosettes); petiolate (petioles mostly broadly winged, 1–9 × 0.2–1.5 cm);

blades elliptic-ovate to spatulate, 2–8 × 1–4 cm, margins subentire to mostly irregularly dentate, apices acute, faces sparsely to densely villous, stipitate-glandular.

hemispheric to campanulate.

turbinate-campanulate.

10–22;

corollas yellow.

0.

corollas yellow;

anthers yellow.

15–50;

corollas yellow;

anthers yellow.

10–22, usually broadly lanceolate, rarely narrowly lanceolate or oblanceolate.

8–15, broadly to narrowly lanceolate.

1 or 3–7.

1, or 3–9(–25).

grayish brown to black, 4–8 mm, mostly stipitate-glandular, sparsely hirsutulous (hairs white to brownish, simple or bifid);

pappi tawny, bristles plumose (with deep, amberlike deposits).

black, 5–10 mm, sparsely stipitate-glandular;

pappi white, bristles barbellate.

= 38, 57, 76, 95, 114, 133, 152.

= 38, 76.