SG Heritage Dictionary

Madrepora [Noun] Webster's Dictionary 1913

A genus of reef corals abundant in tropical seas. It includes than one hundred and fifty species, most of which are elegantly branched.

Madreporaria [Noun plural] Webster's Dictionary 1913

An extensive division of Anthozoa, including most of the species that produce stony corals. See Illust. of Anthozoa.