Field survey and collection of the native grasses were conducted in Tanegashima, Yakushima, and Amamioshima islands of southern Kyushu from the 22nd to the 30th of October, 1966, with the object of exploiting the native and naturalized grasses. The plants collected were mainly in the genera Paspalum, Cynodon, and Panicum. The scientific names of the major species were as follows: Paspalum dilatatum POIR., Paspalum distichum L., Cynodon dactylon PERS., Panicum repens LINN., Panicum plicatulum WILLD NON LAM., Andropogon cottulifer THUMB., Phalaris arundinacea L., Hemarthria compressa R. BROWN, and Zoysia japonica STEUD. In addition to these species, many unidentified species and also ecotypes of the species were collected. In all, about 60 different types of plants were collected.