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A diminutive new species of Predaea (Gigartinales, Rhodophyta) is described from coral reef habitats in Puerto Rico, Caribbean Sea. It is composed of compressed lobes which radiate to form an irregularly rounded shape. The new species is characterized by its cylindrical cortical cells, 3-celled carpogonial branches, small number of nutritive cells associated with auxiliary cells and initiation of gonimoblasts from connecting filaments. [ABSTRACT FROM AUTHOR]

Dasya puertoricensis is newly described from subtidal habitats in southwestern Puerto Rico. The new species is characterized by its conspicuously dense, brush-like branch tips, rhizoidal cortication and by its indeterminate adventitious filaments which arise from pseudolateral basal cells. Adventitious monosiphonous laterals are absent. Tetrasporangial stichidia normally possess 6 sporangia per fertile whorl. The cystocarps are sessile with cortical cells at their broadened bases enveloping the bearing branches. [ABSTRACT FROM AUTHOR]