Carex rigida subsp. bigelowii (Torr. ex Schwein.) Steffen Dataset Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Cyperaceae genus Carex species Carex bigelowii Name Homonyms Carex rigida var. bigelowii (Torr. ex Schwein.) Tuck. Carex rigida subsp. bigelowii (Torr. ex Schwein.) Steffen Carex rigida var. bigelowii (Torr. ex Schwein.) J.Carey, 1856