Flora of North America species comparison

on proximal 1/2–3/4 of each stem;

blades of undivided cauline leaves ovate to orbiculate, margins entire or denticulate, seldom prickly, midribs rarely prickly-setose.

on proximal 1/2–3/4 of each stem;

blades of undivided cauline leaves usually ± oblong, sometimes obovate to lanceolate, margins denticulate, usually prickly, midribs usually prickly-setose, rarely smooth.

8–13+ mm.

9–10(–12) mm.

7–15(–30+);

corollas yellow (sometimes streaked with violet), usually deliquescent.

12–20;

corollas yellow, usually deliquescent.

usually erect in fruit.

usually reflexed in fruit.

usually in corymbiform, sometimes in paniculiform, arrays.

in paniculiform arrays.

bodies pale grayish to whitish or tan, ± flattened, obovate, 3–4 mm, beaks ± filiform, 3–5 mm, faces 5–9-nerved;

pappi white, 3.5–4+ mm.

bodies pale grayish to tan, ± flattened, oblanceolate, 2.5–3.5 mm, beaks ± filiform, 2.5–4 mm, faces (3–)5–9-nerved;

pappi white, (3–)4–5 mm.

= 18.

= 18.