Scirpus caespitosus var. callosus Bigelow ex Torr. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Cyperaceae genus Trichophorum species Trichophorum caespitosum Name Homonyms Scirpus caespitosus var. callosus Bigelow Scirpus caespitosus subsp. callosus Bigelow Scirpus caespitosus var. callosus Bigelow ex Torr.