On the Occurrence of Four Diatom Taxa from Eastern India with a Taxonomic Note

Diatoms were collected from the Kotulpur area of West Bengal. Four diatom taxa, namely, Eunotia minor (Kutzing) Grunow, Achnanthidium minutissimum (Kutzing) Czarnecki, Lemnicola hungarica (Grunow) Round and Basson, and Navicula radiosa Kutzing were observed using scanning electron microscopy (SEM) and identified in light of modern diatom taxonomic trends. Except Eunotia minor, all these taxa are new records to Eastern India. A note on the taxonomy of Achnanthes pseudobiasolletiana as described by Gandhi and Eunotia serrata var. diadema (Ehr.) R. M. Patrick as reported by Dwivedi and Misra has been added.