Acrossota Bourne, 1914

Diagnosis. Colonies of upright polyps arising from stolons that may coalesce into small or extensive basal membranes. Polyp bodies, basal membranes and stolons are covered by a cuticle. Polyp tentacles snake­like, without pinnules, able to be withdrawn by a process of invagination. Sclerites absent. Zooxanthellate.

Type species. Clavularia amboinensis Burchardt, 1902, here designated = Acrossota amboinensis n. comb.