The Floria mangroves comprise an ecosystem of the coasts of the Florida peninsula, including the Florida Keys. The Florida mangrove community includes three mangrove species, Red Mangrove (Rhizophora mangle), Black Mangrove (Avicennia germinans) and White Mangrove (Laguncularia racemosa), and one species that is variously classified as a mangrove or a mangrove associate, Buttonwood (Conocarpus erectus). These plants have differing adaptions to conditions along coasts, and are generally found in partially overlapping bands or zones. The Red Mangrove grows closest to open water. It has multiple prop roots, which may help to stabilize the soil around its roots. Next comes the Black Mangrove. It does not have prop roots, but does have pneumatophores, which grow up from the roots to above the water level. The White Mangrove grows closest to shore. It may have prop roots and/or pneumatophores, depending on conditions where it is growing. The Buttonwood grows in shallow, brackish water or on dry land.