Caulerpa plumaris (Forsskål) C. Agardh var. elegans P. Crouan & H. Crouan in Schramm & Mazé, 1865: 39 (type locality: Guadeloupe, West Indies).
Caulerpa cupressoides (Vahl) C. Agardh [var. lycopodium] forma elegans (P. Crouan & H. Crouan) Weber-van Bosse, 1898: 336.—Gilbert, 1942: 17.— Untawale & Jagtap, 1989: table I.— Coppejans & Prud'homme van Reine, 1992a: 173.— Coppejans & Prud'homme van Reine, 1992b: 679, figs. 2E, 11A (ecad lycopodium-elegans).
INDIAN OCEAN DISTRIBUTION: Indonesia (Java and Sumba), Seychelles.