Anonymous, Pl. Exs. Grayan.Anonymous [1 - 1500 or more]
Sul Ross University, A. Michael Powell Herbarium
F.H. Steinmetz #539 00 September 1937
Potamogeton mysticus Morong
USA, Maine, Cumberland, Stuart Brook, West Scarboro, Scarboro.
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Intermountain Herbarium (Vasc. & Algae)
F.H. Steinmetz #539 00 September 1937
Potamogeton perfoliatus x Potamogeton pusillus hybrid formula
United States, Maine, Cumberland, Stuart Brook, West Scarboro, Scarboro
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