Oscillaria tenerrima Kützing, 1843b: 184 (type locality: Trieste, Italy fide Drouet, 1968: 110).—G. Martens, 1871a: 173.
Oscillatoria tenerrima (Kützing) Prain, 1905: 333 (including Indian Ocean record).—Biswas, 1949b: 19.— Desikachary, 1959: 243.
INDIAN OCEAN DISTRIBUTION: India.
Note: Drouet (1968: 110, 116), after examining the holotype of this species (in L), assigned it to Schizothrix arenaria (Berkeley) Gomont.