Verbatim text: Hickey, R. J. 1977. The Lycopodium obscurum complex in North America. Amer. Fern J. 67: 45--49.
Author: Hickey, R.J.
Year: 1977
Title: The Lycopodium obscurum complex in North America
Journal: Amer. Fern J
Volume: 67
Pages: 45–49