Verbatim text: Chuang, T. I. and L. R. Heckard. 1973. Taxonomy of Cordylanthus subgenus Hemistegia (Scrophulariaceae). Brittonia 25: 135–158.
Author: Chuang, T.I., Heckard, L.R.
Year: 1973
Title: Taxonomy of Cordylanthus subgenus Hemistegia (Scrophulariaceae)
Journal: Brittonia
Volume: 25
Pages: 135–158