Passage 2.32.8
ἔστι δὲ ἔξω τείχους καὶ Ποσειδῶνος ἱερὸν Φυταλμίου· μηνίσαντα γάρ σφισι τὸν Ποσειδῶνα ποιεῖν φασιν ἄκαρπον τὴν χώραν ἅλμης ἐς τὰ σπέρματα καὶ τῶν φυτῶν τὰς ῥίζας καθικνουμένης, ἐς ὃ θυσίαις τε εἴξας καὶ εὐχαῖς οὐκέτι ἅλμην ἀνῆκεν ἐς τὴν γῆν. ὑπὲρ δὲ τοῦ Ποσειδῶνος τὸν ναόν ἐστι Δημήτηρ Θεσμοφόρος, Ἀλθήπου καθὰ λέγουσιν ἱδρυσαμένου.
Outside the wall is also a sanctuary of Poseidon, called Phytalmios ("Nurturer of Plants"). They say that Poseidon, enraged at them, caused their land to become barren by sending seawater that infected their crops and reached down into the roots of the plants. But afterward, appeased by their sacrifices and prayers, he ceased sending brine onto their soil. Above the temple of Poseidon stands a temple dedicated to Demeter Thesmophoros, which, they say, was founded by Althepus.