Milium caerulescens f. angustifolium Regel Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Piptatherum species Piptatherum angustifolium Name Homonyms Milium caerulescens f. angustifolium Regel Milium caerulescens var. angustifolium Regel