in Ancient Geography, a small island near Carystus in Eubœa, which gave name to the mare Myrtoum. Others, according to Pausanias, derive the appellation from Myrto, the name of a woman. Strabo extends this sea between Crete, Argia, and Attica. Pausanias beginning it at Eubœa, joins it at Helena, a desert island, with the Ægean sea. Ptolemy carries it to the coast of Caria. Pliny says, that the Cyclades and Sporades are bounded on the west by the Myrtoan coast of Attica.

the Myrtle, a genus of plants belonging to the icosandra class; and in the natural method ranking under the 19th order, Hesperidea. See BOTANY Index.