Hermatypic corals, or stony corals, are reef-building corals, while corals that do not deposit aragonite structures and contribute to coral reef development are referred to as ahermatypic (non-reef-building) species.[1]
References
^Schuhmacher H, Zibrowius H (2006). "What is hermatypic?". Coral Reefs4: 1–9. doi:10.1007/BF00302198.