Verbatim text: Chuang, T. I. and L. R. Heckard. 1992. A taxonomic revision of Orthocarpus (Scrophulariaceae—tribe Pediculareae). Syst. Bot. 17: 560–582.
Author: Chuang, T.I., Heckard, L.R.
Year: 1992
Title: A taxonomic revision of Orthocarpus (Scrophulariaceae—tribe Pediculareae)
Journal: Syst. Bot
Volume: 17
Pages: 560–582