Verbatim text: Pennell, F. W. 1946. Reconsideration of the Bacopa-Herpestis problem of the Scrophulariaceae. Proc. Acad. Nat. Sci. Philadelphia 98: 83–98.
Author: Pennell, F.W.
Year: 1946
Title: Reconsideration of the Bacopa-Herpestis problem of the Scrophulariaceae
Journal: Proc. Acad. Nat. Sci. Philadelphia
Volume: 98
Pages: 83–98