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Limnobium spongia (Bosc) L.C. Richard ex Steudel. American Frog's-bit, Spongeplant. Phen: Jun-Sep. Hab: Swamps, marshes, ponds, pools. Dist: DE and MD south to s. FL, west to e. TX, north in the interior in the Mississippi Embayment to s. MO and s. IL; disjunct around the Great Lakes (as in n. IN and w. NY).

Origin/Endemic status: Endemic

Taxonomy Comments: Reports of L. spongia as also in tropical America are based on misapplication to L. laevigatum (Humboldt & Bonpland ex Willdenow) Heine.

Synonymy: = Ar, C, ETx1, F, FNA22, G, GW1, Il, K1, K3, K4, NE, NY, RAB, S, Tn, Tx, Va, WH3; = Hydrocharis spongia Bosc; = Limnobium spongia (Bosc) Rich. ex Steud. ssp. spongia – Mo1

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Keith Bradley | Original Image ⭷