This name is a synonym.
* Carex tricostata Fr., Novit. Fl. Suec. Mant. 3: 152 (1843).
Carex gracilis var. tricostata (Fr.) Asch., Fl. Brandenburg 1: 776 (1864).
Carex vulgaris var. tricostata (Fr.) Boott, Ill. Gen. Carex 4: 168 (1867).
Carex vulgaris subsp. tricostata (Fr.) K.Richt., Pl. Eur. 1: 156 (1890).
Carex gracilis subsp. tricostata (Fr.) Suess. in G.Hegi, Ill. Fl. Mitt.-Eur. 2: 81 (1908).
Carex acuta proles tricostata (Fr.) Rouy in G.Rouy & J.Foucaud, Fl. France 13: 500 (1912).
* Basionym/Replaced Synonym