Flora of North America species comparison

single, branches divaricately or freely spreading, glabrous or sparsely pubescent.

withered at flowering;

basal blades linear to oblanceolate, runcinate, 3–10 cm, margins pinnately lobed;

cauline much reduced, bractlike.

2–10 mm (along branches), or 10–40 mm (in paniculiform arrays).

5–7 mm (glabrous, puberulent, or densely stipitate-glandular).

5–11.

of appressed or reflexed bractlets (glabrous, pubescent, or stipitate-glandular).

borne singly or clustered along branches or in paniculiform arrays.

light tan to dark brown, 2.1–6.8 mm, faces smooth to tuberculate, grooved;

pappi of 5–24 tan or white bristles (falling or widened bases persistent, bases connate in groups of 2–4 distal portions breaking off), plumose on distal 50–85%.

= 16.