Crossidium squamiferum subsp. griseum (Jur.) Giacom. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Bryophyta class Bryopsida order Pottiales family Pottiaceae genus Crossidium species Crossidium squamiferum Name Homonyms Crossidium squamiferum subsp. griseum (Jur.) Giacom. Crossidium squamiferum var. griseum (Jur.) G.Roth