Caulerpa alternifolia P. Crouan & H. Crouan in Schramm & Mazé, 1865: 41 (syntype localities: various in Guadeloupe, West Indies).
Caulerpa cupressoides (Vahl) C. Agardh [var. lycopodium] forma alternifolia (P. Crouan & H. Crouan) Weber-van Bosse, 1898: 336.—Gilbert, 1942: 16.
INDIAN OCEAN DISTRIBUTION: Indonesia (Java).