摘要：Resumo Estudo das Rhizophoraceas da Amazônia abrangendo 5 gêneros: Rhizophora, Cassipourea, Sterigmapetalum, Polygonanthus e Anisophyllea. Doze espécies dos referidos gêneros são estudadas e descritas. Novos taxa não foram encontrados, porém, diversos nomes foram colocados em sinonímia. Apresentada a descrição do pólen de algumas espécies.
其他摘要：Summary A taxonomic revision of the Amazonian species of Rhizophoraceae was made. There are 5 genera and 12 species represented in the area. No new taxa were found and several existing names were reduced to synonomy. Comments are given on the relationship of various species and the distribution of each species is given on maps. Some information about the polen grains is given too.
