Continuing studies of West Malesian material of "Agrostophyllum" reveals nine new species and one new synonym. "Agrostophyllum tenue" J.J. Sm. is found to be a synonym of "A. javanicum" Blume. The new taxa proposed are "A. agusanense, A. bialatum, A. dewildeorum, A. edanoanum, A. emwoodiae, A. inflatum, A. loheri, A. urdanetae," and "A. vulcanicum".