Verbatim text: Smith, E. B. 1965. Taxonomy of Haplopappus section Isopappus (Compositae). Rhodora 67: 217–238.
Author: Smith, E.B.
Year: 1965
Title: Taxonomy of Haplopappus section Isopappus (Compositae)
Journal: Rhodora
Volume: 67
Pages: 217–238