Phormidium strains from freshwater- and marine habitats were submitted to culture experiments in media with different concentrations of seawater. The marine strains showed a greater halotolerance and less morphological variability than the freshwater ones. The results are discussed with regard to Drouets species concept within the Cyanophyceae.

Acta botanica neerlandica

CC BY 3.0 NL ("Naamsvermelding")

Koninklijke Nederlandse Botanische Vereniging

W.T. Stam, & H.C. Holleman. (1975). The influence of different salinities on growth and morphological variability of a number of Phormidium strains (Cyanophyceae) in culture. Acta botanica neerlandica, 24(5/6), 379–390.