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

Indiana University Herbarium, Deam Herbarium
Catalog #: IND-0009794
E. C. Ogden #1688 02 August 1937
Potamogeton gramineus L.
United States, Michigan, Mackinac, About 10 meters from Lake Michigan, St. Ignace

Intermountain Herbarium (Vasc. & Algae)
Catalog #: UTC00075727
E.C. Ogden #1683 02 August 1937
Potamogeton gramineus L.
United States, Michigan, Mackinac, About 10 meters from Lake Michigan, St. Ignace