Sagittaria macrocarpa, commonly called the large-fruited arrowhead, is an aquatic plant species known only from the US states of North Carolina and South Carolina.Biota of North America Program, map, Sagittaria macrocarpaJared Gage Smith. 1894. North American Species of Sagittaria and Lophotocarpus 27–28, pl. 23, Sagittaria macrocarpaBogin, Clifford. 1955. Memoirs of The New York Botanical Garden 9(2): 210, Sagittaria graminea var. macrocarpa
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External links photo of herbarium specimen at Missouri Botanical Garden, holotype of Sagittaria macrocarpa, collected in South Carolina