WILLIAMS, D. M. and VIJVER, B. V. D. (2023) βAn electron microscope study and re-description of the type specimens of <em>Synedra </em><em>subula</em> and its transfer to <em>Ctenophora </em>(Bacillariophyta)β, Phytotaxa, 629(2), pp. 176β180. doi: 10.11646/phytotaxa.629.2.7.