ABSTRACT: Cephaleuros is one of the most studied green algal genus among the Trentepohliales, in part for its worldwide distribution, in part for the obvious presence on and sometimes damage to economically important host plants. It has been reported in the tropics in several host plants causing significant economic damage in several crops including tea which is commonly known as red rust of tea. In this work a brief emphasis has been taken on this disease especially on the symptoms, etiology of the pathogen and also on the control measure.