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Achenes oblong-turbinate and 4–5-ribbed sometimes somewhat angular and 4–5-sided, setulose to hispid, or glabrous, with scattered large brown cells on the sides; pappus 2-seriate, the outer series of 5–15 broad or narrow scales, the inner of somewhat larger narrow paleaceous setae.
Phyllaries several seriate, larger to the inside, appressed imbricate to somewhat spreading, the outer often grading into the bracts or leaves below, glabrous to pubescent.
Stems ± strict, branching near the apex, glabrous, sparsely pilose or pubescent, densely leafy with leaves often grading into the phyllaries.
Receptacle flat or ± dome-shaped, paleaceous with the paleae grading from the inner phyllaries and usually exceeding them in length.
Perennial herbs with erect, usually tufted, annual stems from small woody rootstocks; roots radiating, thong-like.
Anthers with a small triangular hyaline apical appendage, anther thecae brownish and shortly acute at the base.
Corollas purple, narrowly funnel-shaped, regularly 5-lobed, the lobes sparsely to densely setose.
Leaves spirally arranged, subsessile, filiform to ± elliptic or lanceolate, glabrous.
Capitula homogamous, 1-many, solitary or in lax terminal corymbiform cymes.
Involucres broadly cup-shaped to turbinate-campanulate, florets exserted.
Style arms terete tapering to the apex, hairy.