The Genera Calothrix Agardh ex Bornet et Flahault, Gloeotrichia J. Agardh ex Bornet et Flahault and Rivularia (Roth) C. Agardh ex Bornet et Flahault (Cyanoprokaryota: Nostocales) in West Bengal, India

摘要

West Bengal has much suitable habitat for heterocystous Cyanoprokaryota but the work done in this state is insufficient. Therefore, area wise and group wise floristic work has been undertaken. In this communication three genera namely Calothrix, Gloeotrichia and Rivularia from Hooghly district have been presented. Calothrix is represented by 6 species, Gloeotrichia by 4 species and Rivularia by one species. Of these five species of Calothrix and one species of Gloeotrichia are new records for algal flora of West Bengal