Species of thalass10sira (Diatoms, bacillariophyceae) in the plankton of english rivers

Abstract

Thalassiosira fluviatilis Hustedt and T. pseudonana Hasle et Heimdal have been found to be widespread in both large and small rivers, while a third taxon, apparently new, has been recorded several times. The appearance of the frustules by light and electron microscopy is commented upon and illustrated, and some of the difficulties of identifying these small diatoms are discussed. © 1977 Taylor & Francis Group, LLC.