Carex rigida var. concolor (R. Brown) Kükenthal

Carex rigida var. concolor (R. Brown) Kükenthal is a synonym sensu FNA Ed. Comm., 2002a of:

Carex bigelowii Torrey ex Schweinitz subsp. bigelowii, an accepted subspecies name sensu FNA Ed. Comm., 2002a.