Ptilidium californicum (Austin) Pearson Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Marchantiophyta class Jungermanniopsida order Ptilidiales family Ptilidiaceae genus Ptilidium species Ptilidium californicum Name Homonyms Ptilidium californicum (Austin) Underw. & O.F.Cook Ptilidium californicum (Austin) Pearson