Ulva furfuracea Mertens ex Hornem. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Chlorophyta class Trebouxiophyceae order Prasiolales family Prasiolaceae genus Prasiola species Prasiola crispa Name Homonyms Ulva furfuracea Mertens ex Hornem. Ulva furfuracea Mertens Ulva furfuracea Mertens ex Hornem.