| Carex rigida Gooden. [Illegitimate] | Synonym |  | WCSP |  | 
	
		| Carex rigida Tuck. [Illegitimate] | Synonym |  | WCSP |  | 
	
		| Carex rigida Clairv. ex Steud. [Illegitimate] | Synonym |  | WCSP |  | 
	
		| Carex rigida Schrank | Synonym |  | WCSP |  | 
	
		| Carex rigida f. aggregata Almq. ex Neuman | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. altaica Gorodkov | Synonym |  | WCSP |  | 
	
		| Carex rigida f. anguillata (Drejer) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida var. bigelowii (Torr. ex Schwein.) Tuck. | Synonym |  | WCSP |  | 
	
		| Carex rigida var. bracteosa (L.H.Bailey) L.H.Bailey | Synonym |  | WCSP |  | 
	
		| Carex rigida var. concolor (R.Br.) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida f. cuspidata (Rosenv.) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida var. dacica (Heuff.) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. decolorans (Wimm.) K.Richt. | Synonym |  | WCSP |  | 
	
		| Carex rigida f. drejeriana (Lange) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. ensifolia Turcz. ex Gorodkov | Synonym |  | WCSP |  | 
	
		| Carex rigida f. glacialis Fr. | Synonym |  | WCSP |  | 
	
		| Carex rigida var. goodenowii (J.Gay) L.H.Bailey | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. hesperia Piper | Synonym |  | WCSP |  | 
	
		| Carex rigida var. inferalpina Laest. | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. inferalpina (Laest.) Gorodkov | Synonym |  | WCSP |  | 
	
		| Carex rigida f. infuscata (Drejer) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida var. intricata (Tineo) Briq. | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. intricata (Tineo) Nyman | Synonym |  | WCSP |  | 
	
		| Carex rigida var. juncea (Fr.) L.H.Bailey | Synonym |  | WCSP |  | 
	
		| Carex rigida f. juncelliformis Almq. ex Neuman | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. kamtschatica Gorodkov | Synonym |  | WCSP |  | 
	
		| Carex rigida f. latifolia (Andersson) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. limula (Fr.) K.Richt. | Synonym |  | WCSP |  | 
	
		| Carex rigida f. lutosa (Drejer) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida f. paradoxa (Drejer) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida f. pudica (Drejer) Kük. | Synonym |  | WCSP |  | 
	
		| Carex rigida subsp. rigidioides Gorodkov | Synonym |  | WCSP |  | 
	
		| Carex rigida var. saxatilis Fr. | Synonym |  | WCSP |  | 
	
		| Carex rigida var. strictiformis L.H.Bailey | Synonym |  | WCSP |  | 
	
		| Carex rigida var. subconcoloroides (Kelso) Kelso | Synonym |  | WCSP |  |