The following taxon apparently lies within the circumscription of Dictyota cervicornis but has not yet been formally transferred:
Dictyota pardalis Kützing forma pseudohamata Cribb, 1954: 22, pl. III: fig. 10 (type locality: Caloundra, Queensland, Australia).—Isaac, 1967: 78.— Lawson, 1980: 23.
INDIAN OCEAN DISTRIBUTION: Kenya.