Anonymous, Pl. Exs. Grayan.
Anonymous [1 - 1500 or more]

Intermountain Herbarium (Vasc. & Algae)
Catalog #: UTC00031755
L.B. Smith #s.n. 10 July 1938
Spirodela polyrhiza (L.) Schleid.
United States, Massachusetts, Middlesex, Horn Pond, Woburn

University of Wisconsin-Madison, Wisconsin State Herbarium
Catalog #: v0399811WIS
187c861c-21b5-47c0-8bbd-8878ef0927a9
Smith, L.B.; Harris, S.K. #827 10 July 1938
Spirodela polyrrhiza (L.) Schleid.
United States, Massachusetts, Middlesex, Horn Pond, Woburn