Sphacelaria tribuloides Menegh. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Sphacelariales family Sphacelariaceae genus Sphacelaria species Sphacelaria tribuloides Name Synonyms Sphacelaria mexicana W.R.Taylor, 1945 Sphacelaria rigida Hering, 1846 Homonyms Sphacelaria tribuloides Menegh.