Verbatim text: Johnson, D. M. 1986. Systematics of the New World species of Marsilea (Marsileaceae). Syst. Bot. Monogr. 11: 1--87.
Author: Johnson, D.M.
Year: 1986
Title: Systematics of the New World species of Marsilea (Marsileaceae)
Journal: Syst. Bot. Monogr
Volume: 11
Pages: 1–87