Caulerpa longifolia C. Agardh, 1823 [1822–1823]: 437 (type locality: southern Australia).—Sonder, 1880: 37.
INDIAN OCEAN DISTRIBUTION: Australia.
Note: Womersley (1984: 262) gave Eucla on the Great Australian Bight as the westernmost locality for Caulerpa longifolia forma longifolia.