Recent genetic work indicates that all Melithaeidae genera other than Asperaxis are not clearly separable, so these are regarded as synonyms of the oldest available name, Melithaea (see Reijnen et al, 2014). Further work is needed to clarify the situation, particularly concerning the "Acabaria" bramble corals and the more regular seafans. This code is provided for use when identification of a specimen to this level is sufficient, or when no further detail is available.
Reijnen, B.T., McFadden, C.S., Hermanlimianto, Y.T., van Ofwegen, L.P., 2014. A molecular and morphological exploration of the generic boundaries in the family Melithaeidae (Coelenterata: Octocorallia) and its taxonomic consequences., Molecular Phylogenetics and Evolution, Vol. 70: 383-401.