Verbatim text: Hickok, L. G. 1977. Cytological relationships between three diploid species of the fern genus Ceratopteris Brongn. Canad. J. Bot. 55: 1660--1667.
Author: Hickok, L.G.
Year: 1977
Title: Cytological relationships between three diploid species of the fern genus Ceratopteris Brongn
Journal: Canad. J. Bot
Volume: 55
Pages: 1660–1667