Pityophyllum Nathorst, 1899 Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Plantae phylum Tracheophyta class Gnetopsida genus Pityophyllum Name Homonyms Pityophyllum (A.G.Nathorst) A.C.Seward, 1919 Pityophyllum Nathorst, 1899