ὄρειον
From LSJ
κρῖναι δὲ λόγῳ πολύδηριν ἔλεγχον ἐξ ἐμέθεν ῥηθέντα → judge by reason the too much contested argument which has been given by me
English (LSJ)
τό, = πολύγονον θῆλυ, mare's tail, Hippuris vulgaris, Plin. HN27.115. ὀρείονες, v. ὀρεᾶνες.