Info from AIMS:
Characters: Colonies are submassive or form extensive, thick unifacial plates. Corallites are small and exsert, with elongate thecal papillae. The colony surface has a rough appearance.
Similar Species: Montipora patula has exsert corallites of similar size but papillae are less exsert. Montipora stilosa has more prominent coenosteum papillae.