Verbatim text: Powell, A. M. 1974. Taxonomy of Perityle, section Perityle (Compositae–Peritylanae). Rhodora 76: 229–306.
Author: Powell, A.M.
Year: 1974
Title: Taxonomy of Perityle, section Perityle (Compositae–Peritylanae)
Journal: Rhodora
Volume: 76
Pages: 229–306