1) Blue-green algae 2) Cyanobacteria 
T. erythraeum T. hildebrandtii T. tenue T. thiebautii T. radians Trichodesmium thiebautii – described by Gomont in 1892. Trichodesmium hildebrantii – Described by Gomont in 1892. Trichodesmium contortum – Described by Wille in 1904. Trichodesmium tenue – Described by Wille in 1904. Trichodesmium radians – Described by Wille in 1904. ==Ce...
[n] - large colonial bacterium common in tropical open-ocean waters
noun large colonial bacterium common in tropical open-ocean waters; important in carbon and nitrogen fixation