Achnanthes austriaca Hust. Achnanthes austriaca Hust. in Int. Rev. Gesamten Hydrobiol. Hydrogr. 10. 1922is basionym for Eucocconeis austriaca (Hust.) Lange-Bert. in Iconogr. Diatomol. 6: 46. 1999Lectotype (designated by Simonsen, R. 19871): Austria, Lunz Untersee (BRM: 1/39)1. Simonsen, R. 1987: Atlas and Catalogue of the Diatom Types of F. Hustedt 1: [i]-x, [1]-525 Registration: http://phycobank.org/101876, 2019-05-17