Verbatim text: Haynes, R. R. 1985. A revision of the clasping-leaved Potamogeton (Potamogetonaceae). Sida 11: 173--188.
Author: Haynes, R.R.
Year: 1985
Title: A revision of the clasping-leaved Potamogeton (Potamogetonaceae)
Journal: Sida
Volume: 11
Pages: 173–188