Halopteris filicina (Gratel.) Kütz. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Sphacelariales family Stypocaulaceae genus Halopteris species Halopteris filicina Name Synonyms Ceramium filicinum Gratel. Halopteris filicina var. sertularia Batters Sphacelaria disticha Vahl Sphacelaria disticha Vahl ex Lyngbye, 1819 Sphacelaria filicina (Grateloup) C.Agardh Homonyms Halopteris filicina (Gratel.) Kütz.