Reference:Powell1965a Verbatim text: Powell, A. M. 1965. Taxonomy of Tridax (Compositae). Brittonia 17: 47–96. Author: Powell, A.M. Year: 1965 Title: Taxonomy of Tridax (Compositae) Journal: Brittonia Volume: 17 Pages: 47–96 Category: Reference Facts... more about "Powell1965a"RDF feedAuthorPowell, A.M. +JournalBrittonia +