There are several varieties of this species that may be reflected in leaf morphology and is reflected in preliminary genetic studies (Duke et al. 1998). It is known that leaf morphlogy is influenced by environmental factors, including salinity, insect damage (Kathiresan 2008), nutrients, and sun exposure. Avicennia is a pantropical genus of about 8 species occupying diverse mangrove habitats. They can occur within the normal tide range or in back mangrove areas. They have a high tolerance to hypersaline conditions (Tomlinson 1986).