Polycyathus
Polycyathus is a genus of small corals in the order Scleractinia, the stony corals. Most species occur in the Pacific Ocean.
Species in the genus include:Polycyathus andamanensis Alcock, 1893Polycyathus atlanticus Duncan, 1876Polycyathus chaishanensis Lin et al., 2012Polycyathus difficilis Duncan, 1889Polycyathus fulvus Wijsman-Best, 1970Polycyathus furanaensis Verheij & Best, 1987Polycyathus fuscomarginatus Polycyathus hodgsoni Verheij & Best, 1987Polycyathus hondaensis Polycyathus isabela Wells, 1982Polycyathus marigondoni Verheij & Best, 1987Polycyathus mayae Cairns, 2000Polycyathus muellerae Polycyathus norfolkensis Cairns, 1995Polycyathus octuplus Cairns, 1999Polycyathus palifera Polycyathus persicus Polycyathus senegalensis Chevalier, 1966Polycyathus verrilli Duncan, 1889