Verbatim text: Keil, D. J. 1978. Revision of Pectis section Pectidium (Compositae: Tageteae). Rhodora 80: 135–146.
Author: Keil, D.J.
Year: 1978
Title: Revision of Pectis section Pectidium (Compositae: Tageteae)
Journal: Rhodora
Volume: 80
Pages: 135–146