Summary: This paper describes the isolation and characterization of a new species of cyanobacterium, The assignment to the genus , first described by Crow (1927), is based on a property which is unusual for cyanobacteria: trichomes viewed in cross-section are elliptical rather than circular. This organism was isolated from the surface layer of sandy soil of coastal dunes in The Netherlands. The organism is non-motile and drought resistant, and its cell surface is hydrophilic. The temperature optimum for growth is 25 °C. The mean DNA base composition is 33·9 mol% G + C. The cell wall is relatively thick and contains poly-β-(1,4)glucan (cellulose), which is unusual for cyanobacteria.


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