Scleria aureovillosa Kiaosanthie & K.Wangwasit, a new species of Cyperaceae from North-Eastern Thailand, is described and
illustrated. It is closely related to S. benthamii C.B.Clarke but differs in the leaf and culm surfaces, culm shape, the absence of wings
at the leaf sheath, contraligule features, nutlet morphology and micromorphology, and leaf and culm anatomy. An emended section
of the key to the species in the Flora of Thailand account of Scleria is provided.