Perityle lindheimeri

Perennials or subshrubs, (10-)18-45(-60) cm; glabrate or sparsely hairy. Leaves: petioles 4-15 mm; blades broadly ovate to ovate-lanceolate, 10-40 × 10-35 mm, margins entire or serrate-lobed. Heads in corymbiform arrays, 6-7 × 4-6 mm. Peduncles 3-20 mm. Involucres narrowly campanulate. Phyllaries 12-14, narrowly lanceolate to oblanceolate, 3-4 × 2 mm. Ray florets 3-5; corollas yellow, laminae oblong to suborbiculate, 2.5-3 × 1.5-2 mm. Disc florets 16-22; corollas yellow, tubes 0.8-1.5 mm, throats narrowly campanulate, 1-1.5 mm, lobes 0.5 mm. Cypselae linear-oblong to narrowly oblanceolate, 2-2.8 mm, margins thin-calloused, minutely hairy; pappi 0, or of 1(-2) bristles 0.5-1.8 mm.

A specimen resembling Perityle lindheimeri was collected in 1936 near Ruidosa in Lincoln County, New Mexico. The identity and exact location of that seemingly out-of-place collection remain to be determined.