In this article we will discuss about the Fritsch’s and Smith’s classification of algae. 1. Fritsch’s Classification: The algae have broadly been divided by F. F. Fritsch in 1935 into eleven classes according to their colour: i. Chlorophyceae or green algae, e.g. Chlamydomonas, Volvox, Oedogonium, Spirogyra, Vaucheria, Chara, etc. ii. Xanthophyceae or yellow—green algae e.g. […]