Flora of North America species comparison

(forming clumps) simple or branched among heads.

simple.

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.

1–3 pairs, mostly cauline (shorter plants often with leaves crowed mostly toward bases); petiolate;

blades elliptic, oblong, or ovate-lanceolate, 1.5–7.5 × 0.5–2 cm, margins usually entire, rarely denticulate or slightly undulate, apices usually obtuse, sometimes acute or acuminate, faces glabrous or hispidulous-puberulent, ± densely stipitate-glandular.

usually narrowly turbinate, rarely narrowly campanulate.

campanulate-turbinate.

8–16, yellow.

7–10;

corollas yellow.

corollas yellow;

anthers yellow.

corollas yellow;

anthers yellow.

9–20, linear to narrowly lanceolate.

10–20, narrowly lanceolate (stipitate-glandular).

1–3(–5).

usually 1, sometimes 2–3 (nodding at flowering).

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

pappi stramineous to tawny, bristles subplumose.

brown, 3–5 mm, abaxially glabrous, adaxially sparsely hirsute or glabrous throughout, usually stipitate-glandular toward apices, sometimes densely stipitate-glandular throughout;

pappi white, bristles barbellate.

= 57, 76.

= 76, 95.