Perennials or subshrubs, 20-40 cm; glabrate or puberulent. Leaves: petioles 10-30 mm; blades (2-)3-pinnate, 15-55 × 10-50 mm, lobes linear to flat-filiform, scarcely broadened distally. Heads borne singly or (2-4) in loose, corymbiform arrays, 7.5-10 × 10-14 mm. Peduncles 1-3 mm. Involucres broadly campanulate to hemispheric. Phyllaries 14-25, linear-lanceolate to lanceolate, 5-7 × 0.5-1 mm. Ray florets 10-17; corollas yellow, laminae oblong to oblong-ovate, 4-6 × 2-3.2 mm. Disc florets 75-200; corollas yellow, tubes 1-1.2 mm, throats narrowly tubular to narrowly funnelform, 2-2.5 mm, lobes ca. 0.7 mm. Cypselae narrowly oblanceolate to narrowly oblong-elliptic, 2.8-3.2 mm, margins notably calloused, sparsely short-hairy; pappi 0 or of 1(-2) bristles (2-)4-5 mm. 2n = 34. Flowering spring-fall. Crevices of igneous rocks; of conservation concern; 700-1100 m; Ariz. Perityle saxicola occurs in the area of Tonto National Monument and Roosevelt Dam in central Arizona. The 2-3-pinnately dissected leaves with long-linear to flat-filiform lobes distinguish it from the similar P. gilensis with its broader leaf lobes.