Juncus macer subsp. williamsii (Fernald) F.J.Herm. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Juncaceae genus Juncus species Juncus tenuis Name Homonyms Juncus macer var. williamsii (Fernald) Fernald Juncus macer f. williamsii (Fernald) F.J.Herm. Juncus macer subsp. williamsii (Fernald) F.J.Herm.