Verbatim text: Bates, V. M. and E. T. Browne. 1981. Azolla filiculoides new to the southeastern United States. Amer. Fern J. 71: 33--34.
Author: Bates, V.M., Browne, E.T.
Year: 1981
Title: Azolla filiculoides new to the southeastern United States
Journal: Amer. Fern J
Volume: 71
Pages: 33–34