Dasya abbottiana sp. nov. (Dasyaceae, Rhodophyta) from Puerto Rico, Caribbean Sea

Dasya abbottiana is newly described from subtidal habitats in southwestern Puerto Rico, Caribbean Sea. The new species is characterized principally by its rhizoidal cortication and possession of verticillately arranged, iridescent ultimate branchlets. Female gametophytes have urceolate pericarps with elongate carpostomes. Tetrasporangia, each with three cover cells, are produced in whorls of five in elongate-conical stichidia.