Saccoloma nigrescens (Mett.) Kaulf. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Saccolomataceae genus Saccoloma species Saccoloma nigrescens Name Homonyms Saccoloma nigrescens (Mett.) Kaulf. Saccoloma nigrescens (Kunze) A.Rojas