Reference:Fernald1929a
Verbatim text: Fernald, M. L. 1929. Coptis trifolia and its eastern American representative. Rhodora 31: 136-142.
Author: Fernald, M.L.
Year: 1929
Title: Coptis trifolia and its eastern American representative
Journal: Rhodora
Volume: 31
Pages: 136–142