Byssus purpurea Lam., 1778 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Porphyridiophyceae order Porphyridiales family Porphyridiaceae genus Porphyridium species Porphyridium purpureum Name Homonyms Byssus purpurea Lam., 1778 Byssus purpurea Lightfoot