Observations on the type material of Achnanthidium affine (Achnanthidiaceae, Bacillariophyta)
B. Van de Vijver, I. Jüttner, C.E. Wetzel, and L. Ector
Notulae Algarum, vol. 208, pp. 1-4, 2021
https://notulaealgarum.org/2021/documents/Notulae%20Algarum%20No.%20208.pdf