In the present communication, sixteen members of Nostocales of Cyanophyta have been described. These algae have been collected from a pond and its adjoining rice field areas of Karjona, Burdwan of West Bengal. In this work heterocystous members like Anabaena anomala Fritsch, Aphanizomenon flos-aquae (Linn.) Ralfs ex Born. et Flah., Aulosira fertilissima Ghosh var. tenuis Rao C B, Calothrix weberi Schmidle, Gloeotrichia raciborskii Woloszynska var. conica Dixit, and Rivularia hansgirgi Schmidle while non-heterocystous members like Katagnymene pelagica Lemm., Lyngbya major Menegh. ex Gomont, Lyngbya martensiana Menegh. ex Gomont, Lyngbya stagnina Kützing, Oscillatoria nigra Vaucher, Oscillatoria okeni Ag. ex Gomont, Oscillatoria proteus Skuja, Oscillatoria subbrevis Schmidle, Spirulina gigantea Schmidle and Spirulina meneghiniana Zanard. ex Gomont have been investigated. Of these following three taxa, viz., Anabaena anomala Fritsch, Calothrix weberi Schmidle, Rivularia hansgirgi Schmidle have been reported for the first time from West Bengal. The result shows interesting observations. Most of the heterocystous members like Anabaena anomala, Aphanizomenon flos-aquae and Aulosira fertilissima var. tenuis appear early but thrive till December, i.e. they are unable to withstand extreme winter while Gloeotrichia raciborskii var. conica and Rivularia weberi appear late in winter and can withstand winter till onset of summer. Non heterocystous members are however better adapted to environment conditions and can tolerate odds including the summer although unable to survive in extreme dry months in vegetative condition. Occurrence of Katagnymene pelagica is rather sporadic.