Carex rhizopoda, also commonly known as rhizopoda sedge, is a sedge that is native to parts of Japan and eastern parts of China.
The perennial sedge has a long thick rhizome which is covered in brown coloured fibrous remains of the leaves. It has soft and trigonous shaped culms that are typically in length. The sedge has soft and herbaceous leaves that are usually shorter than the culms. The leaf blade is wide and is scabris along the margins. It produces a one-spiked terminal and erect inflorescence that has a linear to cylindrical shape and is long and wide and produces three to five flowers.
The species was first described by Karl Maximovich in 1886 in the Bulletin de l'Académie impériale des sciences de St.-Pétersbourg. It has three synonyms.
The plant is found in temperate biomes in Asia with a range extending from Jiangxi and Anhui provinces of south-eastern China and in Japan.