Passage 8.12.1
τοῦ τάφου δὲ τοῦ Ἐπαμινώνδα μάλιστά που σταδίου μῆκος Διὸς ἀφέστηκεν ἱερὸν ἐπίκλησιν Χάρμωνος. Ἀρκάδων δὲ ἐν τοῖς δρυμοῖς εἰσιν αἱ δρῦς διάφοροι, καὶ τὰς μὲν πλατυφύλλους αὐτῶν, τὰς δὲ φηγοὺς καλοῦσιν· αἱ τρίται δὲ ἀραιὸν τὸν φλοιὸν καὶ οὕτω δή τι παρέχονται κοῦφον, ὥστε ἀπʼ αὐτοῦ καὶ ἐν θαλάσσῃ ποιοῦνται σημεῖα ἀγκύραις καὶ δικτύοις· ταύτης τῆς δρυὸς τὸν φλοιὸν ἄλλοι τε Ἰώνων καὶ Ἑρμησιάναξ ὁ τὰ ἐλεγεῖα ποιήσας φελλὸν ὀνομάζουσιν.
About a stade's distance from the tomb of Epaminondas stands a sanctuary of Zeus surnamed Charmon. Among the Arcadians, in the woodlands there are various sorts of oak trees; some they call broad-leaved, others phegos (oak), and a third kind whose bark is so thin and especially light that from it they make floats for anchors and nets used in the sea. This type of oak bark is termed "phellos" by certain of the Ionians and by Hermesianax, who composed elegiac poetry.