Verrucaria caesia f. saprophila (Arnold) Stizenb. Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Fungi phylum Ascomycota class Eurotiomycetes order Verrucariales family Verrucariaceae genus Staurothele species Staurothele caesia Name Homonyms Verrucaria caesia f. saprophila (Arnold) Stizenb.