Limnobium spongia
Frog's-bit

Native to Florida

Frog's-bit is a native floating or rooted aquatic plant. It occurs in many water types, and can form dense mats. One species of Limnobium exists in Florida (Wunderlin, 1998). Frog's bit is located in the southeast quarter of the US, as well as a few states in the north, including, IN, IL, and NY (Kartesz, 1999).

Frog's-bit leaves are very thick and leathery. They are either rounded, or in younger plants, somewhat heart-shaped with rounded lobes. Younger leaves tend to be bright and shiny above and reddish underneath. Undersides of young leaves have a central disk of red spongy cells. The leaf stalks have ridges on either side, and are firm.

Frog's-bit may be confused with water hyacinth, Eichhornia crassipes. Compare the roots and stems. See more about water hyacinth here.

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