Buse’s (1854) treatment of Junghuhn’s Gramineae appeared before more parts of Steudel’s Synopsis (1853-1855) than was previously thought. Agrostis rigidula Steud. becomes. A. infirma Buse with 8 new varietal combinations. Arundinella fuscata Nees ex Buse previously regarded as a later homonym is invalid, and must be called A. goeringii Steud. Helictotrichon junghuhnii (Buse) Henrard supersedes H. virescens Nees ex Steud., and Tripogon exiguus Buse replaces T. semitruncatus Nees ex Steud.