According to Greek mythology, it was founded by Phlegyas.
It was located near Orchomenus, where its founder supposedly came to gather the most warlike Greeks.
Later, the Phlegyans separated from the Orchomenians and were hostile to them, even going so far as to plunder the temple of Delphi.
It was said that the gods punished the Phlegyans, destroyed almost all their lineage and what few survivors remaining managed to flee to Panopeus, in Phocis.
This article about a location in ancient Boeotia is a stub.