FLIP: Florida Invasive Plants

Luziola subintegra

Common Name(s): Tropical American watergrass


Mexico, Central and South America

Ecological Impact

In the United States, L. subintegra creates dense mats on the water surface that change habitat structure and crowd out native species (Bodle, 2009; Kunzer and Bodle, 2008). The thick mat of vegetation, it creates restricts recreational access to areas (Bodle, 2009)


Luziola subintegra is a floating or emergent perennial, aquatic grass with decumbent culms to about one meter in length. Leaf sheaths are somewhat spongy and help it float in aquatic environments, although it can occur in savannas as well (Martínez-y-Pérez et al., 2008).

Identification Tips

This species is stoloniferous and roots from nodes (Kunzer and Bodle, 2008).


The U.S. population is the first one known outside of its native range (Kunzer and Bodle, 2008; Martínez-y-Pérez et al., 2008). This species has demonstrated its invasive ability by establishing a breeding population in a relatively remote area of Florida, and by rapidly expanding its population over a few years (Bodle, 2009, 2012).


This species occurs in three sites in south Florida. The principal population is in Fisheating Bay, Lake Okeechobee, in southern Florida (Kunzer and Bodle, 2008).

Management Strategies

Populations at all three sites are being controlled and monitored by the South Florida Water Management District.


Most photos courtesy of the Atlas of Florida Plants; click for additional plant details.

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Florida Invasive Plants