Benth. & Hook. f. Gen. Pl. iii. 1128 DIDACTYLON, Zoll. & Moritzl, Syst. Verz.Zoll. 99 (1846). HAPLACHNE, J. & C. Presl, Rel. Haenk. i. 234. t. 38 (1830).PSILOSTACHYS, Steud. Syn. Pl. Gram. 418 (1855). PTERYGOSTACHYUM, Nees, ex Steud.Syn. Pl. Gram. 413 (1855). {corrected when editing for database}