Carex helferi is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to parts of South East Asia.[1]
The sedge has a woody rhizome with central culms that have a triangular cross-section with a length of and a width of and that are smooth lower down with a rough texture toward the top. It has basal flattish to folded lengthwise leaves with a broadly linear to lanceolate shaped blade that is long with a long dark brown sheaths that usually disintegrate. The narrow inflorescences appear as a narrow branched cluster with a length of with three to six crowded to distant nodes.
The species was first formally described by the botanist Johann Otto Boeckeler in 1876 as a part of the work Linnaea.[2] It has two synonyms;
It is often situated along river banks in the understorey of evergreen forests from an altitude of [3] in tropical biomes, the range of the plant extends from Myanmar in the north to Thailand in the south and on the island of Java in Indonesia.[1]