Sparganium natans Linnaeus. Phen: Jun-Sep. Hab: Lakes and bogs, often aquatic. Dist: Circumboreal, south in North America to n. NJ, n. PA, s. MI, n. IN, n. IL, c. MN, nw. NM, n. AZ, and c. CA.
Origin/Endemic status: Native
Synonymy: = FNA22, Il, K3, K4, Mi, NE, NY, Pa; > Sparganium minimum – F