Verbatim text: Hellquist, C. B. 1984. Observations of Potamogeton hillii Morong in North America. Rhodora 86: 101--111.
Author: Hellquist, C.B.
Year: 1984
Title: Observations of Potamogeton hillii Morong in North America
Journal: Rhodora
Volume: 86
Pages: 101–111