Najas guadalupensis (Southern Waternymph) is a species of annual herb in the family Hydrocharitaceae. They have a self-supporting growth form. They are native to Canada, Rio Grande Do Sul, Bahia, Amapá, Minas Gerais, The Contiguous United States, Pantanal, Puerto Rico, SãO Paulo, Mata Atlântica, Mato Grosso, and Mato Grosso Do Sul. They have simple, broad leaves and green flowers. Individuals can grow to 1 feet.
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