Nonindigenous Aquatic and Semi-Aquatic Plants in Freshwater Systems

Nonindigenous Aquatic Plants

Water Nymph (Najas ancistrocarpa) Magnus.

This diminutive submersed exotic naiad (Fig. 11) is rare even in its native Japan. It is in ponds and quiet lakes (Schardt and Schmitz 1990). Data on the introduction of water nymph into the United States are scarce. It is currently in only some locations in southern Georgia and northern Florida (Godfrey and Wooten 1979). The water nymph was reported in one public water in 1990 where it covered about 2 ha. In Florida, this species has not caused problems, and records do not reveal control of this plant.