Petalonema is a genus of cyanobacteria. These species occur in freshwater habitats, on rocks, in soil, and as epiphytes.Petalonema. CyanoDB.cz. A Database of Cyanobacterial Genera.
Species include:Guiry, W. In: Guiry, M. D. & G. M. Guiry. 2013. Petalonema. AlgaeBase. National University of Ireland, Galway.Uher, B. (2010). Cyanobacterium Petalonema alatum Berk. ex Kirchn. – Species variability and diversity. Fottea 10(1) 83-92. Petalonema alatum Petalonema crassum Petalonema crustaceum Petalonema densum Petalonema fluminalis Petalonema incrustans Petalonema involvens Petalonema pulchrum Petalonema velutinum
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