In the present paper, five species and one variety of sedges, grass and pipewort were newly proposed and one sedge was reduced to a varietal rank. A special mention is necessary for a new sedge of Garciles from Java. So far as Thunberg's type, Carex brunnea is characterised by somewhat yellowish-green leaves and very small perigynia 2.5-2.7mm long, hence Dr. Kükenthal once considered true C. brunnea to be a variety of C. genlilis. Although the species of Graciles have very wide deviation, the above plant from Java is not C. brunnea. Further, Malaysian plants treated so may possibly be quite different from C. brunnea. The abbreviations TI and TNS are used for the herbaria of the University of Tokyo and of the National Science Museum, Tokyo, respectively.