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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). Reports of L. spongia as also in tropical America are based on misapplication of the name to plants that are actually L. laevigatum (Humboldt & Bonpland ex Willdenow) Heine.

Origin/Endemic status: Endemic

Synonymy: = AqW, Ar, C, ETx1, F, FNA22, G, GW1, Il, K1, K3, K4, NE, NY, RAB, S, S13, Tat, Tn, Tx, Va, WH3; = Hydrocharis spongia Bosc; = Limnobium spongia (Bosc) Rich. ex Steud. ssp. spongia – Mo1

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Eastern Mountains and Piedmont: OBL
  • Great Plains: OBL
  • Midwest: OBL
  • Northcentral & Northeast: OBL

Heliophily ?: 7

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷
image of plant© Paul Marcum source | Original Image ⭷

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