Registration Id: http://phycobank.org/7854

Event: new name, new combination

Planothidium frequentissimum var. magnum (F.Straub) Lange-Bert. in Iconogr. Diatomol. 6: 276. 19991
is new combination for Achnanthes rostrata var. magna F.Straub
1. (Basionym:) fig. 10: 142, 11: 142b
published in: Lange-Bertalot, H. 1999: – Iconographia Diatomologica 6: 276

Registration on 1999-02-28 23:00:00 +0100 in Berlin