English: A,S,HITCHCOCK, the Genera of Grasses of the United States,Revised by A,Chase, may,1936,in U,S,Dep,of Agric,Bull,No,772,and Mannal of the Grasses of the United States, 1935,in U,S,Dep,of Agric,Misc,Pubul,No,200
Japanese: 故ヒツチコツク氏, 北米合衆国産禾本の属及び北米合衆国産禾本の綱要