La familia Rhodomelaceae (Ceramiales, Rhodophyta) en la costa del estado de Michoacán, México
In this paper, the Rhodomelaceae family intertidal representants are characterized in the coasts of Michoacan. A list of taxonomic characters and a preliminary weight of them are proposed for use in the determination and diagnosis of the species in each genus of the family. The elaboration of a sinoptic key for the genera and species investigated was carried out. An analys is about the distribution of the species through the litoral of Michoacan was made and some of the causes for the presence and absence of them are discussed , considering mainly the habitat where they grow. An emphasis was made in morphologic and anatomic variation between the previous records and our material, and in some cases, a new range of variation is given. . The analyzed flora is composed of fourteen species, distributed in five genus, pointing out six new records for Mexico in its tropical coasts: Polysiphonia confusa, P.scopulorum, Chondria arcuata, C. daswhylla, Laurencia clarionensis y L. hancockii.