Studies in the Eupatorieae (Compositae). XXII. The genus Piptothrix Studies in the Eupatorieae (Compositae). XXII. The genus v. 19425–426King, Robert M. and Robinson, Harold E. 1970. "Studies in the Eupatorieae (Compositae). XXII. The genus Piptothrix." Phytologia, 19 425–426.More...ID: 23753Type: articleKeywords: NH-Botany; NMNH