The family Characeae are cosmopolitan, occurring on all continents (except Antarctica) and on many isolated oceanic islands. This family included Protochara, Chara, Nitella, Nilellopsis, Tolypella, Lychnothamnus and Lamprothamnium. But when compared to other genera Nitella far exceeds them in number. In India, the number of species of Characeae described is poor and more extensive floristic studies should be undertaken, particularly in remote ...
