Abstract
Present investigation deals with systematic enumeration, importance and uses of Genus Nostoc Vaucher ex Bornet and Flahault collected from different water bodies of Maldah District, West Bengal. Six species and one variety of Genus Nostoc Vaucher ex Bornet and Flahault (Nostoc calcicola Bréb. ex Bornet and Flahault, Nostoc carneum C.Agardh ex Bornet and Flahault, Nostoc comminutum Kütz., Nostoc ellipsosporum Rabenh. ex Bornet and Flahault, Nostoc linckia Bornet ex Bornet and Flahault, Nostoc oryzae (F.E.Fritsch) Komárek and Anagn. and Nostoc ellipsosporum var. violaceum C.B.Rao) were recorded from water bodies of out of fifteen, four blocks - Harishchandrapur-I, Harishchandrapur-II, Ratua II and Gazol of Maldah District, West Bengal. Nostoc ellipsosporum var. violaceum C.B.Rao has been reported for the first time from barabilla bil of block Ratua II of Maldah District, West Bengal. Some of the species of Nostoc Vaucher ex Bornet and Flahault are very important and useful in different ways which has been described in this paper.
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