Flora of North America species comparison

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.

on proximal 1/2–3/4+ of each stem;

blades of undivided cauline leaves ± linear to filiform, margins entire or denticulate, midribs usually prickly-setose.

9–10(–12) mm.

6–9(–13+) mm.

12–20;

corollas yellow, usually deliquescent.

6–12(–20+);

corollas yellow (sometimes abaxially bluish), usually deliquescent.

usually reflexed in fruit.

usually erect in fruit.

in paniculiform arrays.

in racemiform to spiciform arrays.

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.

bodies pale brown, ± flattened, elliptic to oblanceolate, 2.5–3.5 mm, beaks ± filiform, (2–)5–6 mm, faces 5–7-nerved;

pappi white, 5–6 mm.

= 18.

= 18.