A taxonomic study on soil taxa of Anabaena Bory ex Bornet et Flahault (Nostocaceae) in Iran

In a revision of the genus Anabaena Bory ex Bornet et Flahault (Nostocaceae) in terrestrial habitats, 33 specimens belonging to eleven species and one variety were identified. Specimens were collected from 18 paddy field soils located in seven provinces of Iran. Anabaena sphaerica Bornet et Flahault, A. portoricensis N. L. Gardner, A. fertilissima C. B. Rao, A. orientalis Dixit and A. ambigua C. B. Rao are reported as five new records from Iran. An identification key, description and pictures of these species are presented in this study.