Potamogeton ×perplexus A. Benn.
[= Potamogeton ×schreberi]
Annotated by R. R. Haynes, 1981.

British Columbia: Chilliwack Valley.
49.083°, -121.708°
Isotype. isotype.

J. M. Macoun s.n., 21 Aug 1901
NY, Barcode: 00288821