HAMADRYAS was a Dryad, perhaps the first of the oak-tree nymphs. She was a daughter of Oreios ("He of the Mountains"), the wife of Oxylos ("Of the Woods "), and the mother of eight Hamadryades who presided over other specific types of tree. Her daughters played a role in the story of Dryope ("Oak-Face"), a girl loved by the god Apollon who was transformed into a Dryad.
Hamadryas means either "together with tree" or "together with oak," for in Greek drys is the word for both "holm oak" and a "tree" in general.
Athenaeus, Deipnosophistae 1. 78b (trans. Gullick) (Greek rhetorician C2nd to C3rd A.D.) :
"The Epic poet Pherenikos, a Herakleto by birth, declares that the fig (Sykon) was named from Syke (Fig-Tree), the daughter of Oxylos (Beech-Tree); for Oxylos, son of Oreios (Mountain), married his sister Hamadryas (Plum Tree) and begot among others, Karya (Walnut-Tree), Balanos (Oak-Nut Tree), Kraneia (Cornel-Tree), Morea (Mulberry-Bush), Aigeiros (Poplar-Tree), Ptelea (Elm-Tree), Ampelos (Grape-Vine), and Syke (Fig-Tree); and these are called Nymphai Hamadryades, and from them many trees derive their names."
- Athenaeus, Deipnosophistae - Greek Rhetoric C3rd A.D.