Verbatim text: Keener, C. S. 1993. A review of the classification of the genus Hydrastis (Ranunculaceae). Aliso 13: 551-558.
Author: Keener, C.S.
Year: 1993
Title: A review of the classification of the genus Hydrastis (Ranunculaceae)
Journal: Aliso
Volume: 13
Pages: 551–558