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 oblong, obovate, or lanceolate to spatulate or lance-linear, margins entire or denticulate, midribs sometimes sparsely pilose.

9–10(–12) mm.

10–12+ mm.

12–20;

corollas yellow, usually deliquescent.

15–20+;

corollas bluish or yellowish, usually deliquescent.

usually reflexed in fruit.

usually reflexed in fruit.

in paniculiform arrays.

in ± corymbiform to paniculiform 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 brown (often mottled), ± flattened, elliptic, 5–6 mm, beaks ± filiform, 1–3 mm, faces 1(–3)-nerved;

pappi white, 5–6 mm.

= 18.

= 34.