Flora of North America species comparison

(forming clumps) simple or branched among heads.

(forming clumps) simple or branched among heads.

(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).

2–3(–4) pairs (basal 1–2 pairs usually withered by flowering, petiolate, petioles broadly winged, blades round-ovate, relatively small; sterile rosettes lacking), mostly cauline; petiolate (at least middle pair, petioles broadly to narrowly winged);

blades broadly deltate to ovate, 4–8 × 2–6 cm (middle pair largest), margins irregularly denticulate to coarsely dentate-serrate, apices acute, faces puberulent (hairs minute) and stipitate-glandular.

hemispheric to campanulate.

usually narrowly turbinate, rarely narrowly campanulate.

10–22;

corollas yellow.

8–16, yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

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

9–20, linear to narrowly lanceolate.

1 or 3–7.

1–3(–5).

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).

brown to black, 5–7 mm, sparsely to moderately pilose and stipitate-glandular;

pappi stramineous to tawny, bristles subplumose.

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

= 57, 76.