Achnanthes hedinii Hust. Achnanthes hedinii Hust. in Hedin, Southern Tibet 6(3): 122, pl. IX, fig. 12-14. 1922is basionym for Crenotia hedinii (Hust.) Rioual, Ector & C.E.Wetzel in Notul. Algarum 106: 2. 8 Jul 2019Lectotype (designated by Simonsen, R. 19871): Tibet, D. Lager 27-28, S. Hedin (BRM: 67/63)1. Simonsen, R. 1987: Atlas and Catalogue of the Diatom Types of F. Hustedt 1: [i]-x, [1]-525 Registration: http://phycobank.org/101964, 2019-07-08