Flora of North America species comparison

usually simple, rarely branched.

simple.

1–5 pairs, mostly cauline; petiolate (petioles broadly to narrowly winged, shorter than blades);

blades broadly lanceolate to linear, 2–20 × 0.3–4 cm, margins entire or irregularly denticulate or dentate, apices acute or acuminate, faces glabrous or densely woolly-villous and stipitate-glandular.

2–3 pairs, mostly cauline (basal leaves often persistent on sterile rosettes); petiolate (petioles narrowly to broadly winged);

blades elliptic to ovate, 3–8 × 2–4 cm, margins entire or denticulate, apices acute to rounded, faces stipitate-glandular.

hemispheric.

campanulate-turbinate.

6–16;

corollas yellow.

6–14;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

9–22, usually narrowly to broadly lanceolate, sometimes oblanceolate.

10–16, oblanceolate.

1–3(–5; erect).

1(–3).

brown, 3–8 mm, densely hirsute, rarely glandular;

pappi white, bristles barbellate.

dark gray, 6–9 mm, stipitate-glandular;

pappi white or tawny, bristles barbellate to subplumose.

= 76.