Carex otrubae, the false fox-sedge, is a species of flowering plant in the Cyperaceae family which can be found in Central Asia, Europe, West Siberia, and Xinjiang, China at the elevation of 1,800 millimetres (71 in). It is 40–70 centimetres (16–28 in) high with the leaves being linear and are 3–7 millimetres (0.12–0.28 in) wide. Both inflorescence and lanceolate are 5 centimetres (2.0 in) long. Its utricles are either pale green or orange-brown. Female specimens have pale orange-brown glumes which are ovate and are 3 millimetres (0.12 in) in length.