Info
Characters: Colonies are massive and cerioid or have several centres in a short series. Columellae are rudimentary. Septa are thin, with pointed fine teeth.
Colour: Usually mottled grey-green with valleys and walls of contrasting colours.
Habitat: Most reef environments, but especially surge channels.
Abundance: Usually uncommon.
Synonymised names:
Astraea (Fissicella) rigida Dana, 1846 · unaccepted > superseded combination (basionym)
Astraea rigida Dana, 1846 · unaccepted > superseded combination
Astrea rigida (Dana, 1846) · unaccepted > superseded combination
Isophyllastraea rigida (Dana, 1846) · unaccepted > superseded combination
Isophyllastrea rigida (Dana, 1846) · unaccepted > superseded combination
Isophyllia sinuosa f. rigida (Dana, 1846) · unaccepted > superseded combination
Mussa (Isophyllia) dipsacea var. aster Verrill, 1907 · unaccepted > junior subjective synonym
Mussa (Symphyllia) annectens Verrill, 1901 · unaccepted > junior subjective synonym
Mussa (Symphyllia) rigida (Dana, 1846) · unaccepted > superseded combination
Mussa annectens Verrill, 1902 · unaccepted > junior subjective synonym
Prionastraea rigida (Dana, 1846) · unaccepted > superseded combination