Pappi usually of 1(-2) bristles 0.5-1.8 mm plus vestigial, laciniate scales or obscure callous crowns, rarely 0. 2n = 34.

Flowering spring-fall. Crevices of cretaceous limestone rock, often beside streams and springs; 300-700 m; Tex. 2n = 34.

Variety lindheimeri is widely distributed on the Edwards Plateau. The more numerous, smaller, radiate heads and ovate leaves distinguish it from the related Perityle angustifolia, which has larger, discoid heads and linear to lanceolate leaves.