Lĭth'o-phȳte, n.

noun

[Gr. λίθος, stone, and φυτόν, plant, fr. φύειν, to bring forth, to grow; Fr. lithophyte, literally stone-plant.] (Zoöl.) A production apparently both stone and plant, as the corals and sea-fans. They are now known to be either animals or plants. Dana.

Two lithophytes are shown, with the first depicted in a split view and the second as a ridged shell.
Lithophytes. a, Petricola pholadiformis; b, Dactylus.