Flora of North America species comparison

on proximal 1/2–2/3 of each stem;

blades of undivided cauline leaves obovate to spatulate, margins denticulate, midribs usually prickly-setose.

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.

12–15 mm.

10–12+ mm.

10–15;

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 purplish to blackish, ± flattened, ± elliptic, 3.5–4 mm, beaks ± filiform, 2.5–3.5 mm, faces 5–7-nerved;

pappi white, 5–6 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.