GEITLER, L. 1930–1932 Cyanophyceae Dr. L. Rabenhorst's Kryptogamen-Flora ... Ed. 2. Vol. 14. Leipzig. VI + 1196 pp., 780 figs. [Pp. [1]–288, figs. 1–141 (1930); pp. 289–672, figs. 142–433 (1931); pp. 673–1196 + [I]–VI, figs. 434–780 (1932).] IOC