Hamadryad n. : A tree nymph whose life ended with that of the particular tree, usually an oak, which had been her abode.

Hamadryad n. : A large venomous East Indian snake (Orhiophagus bungarus), allied to the cobras.

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Taxonomy
Hamadryad, tree, Hamadryads, free encyclopedia, god, dryads, search, Greek deities, mother of Apollo, Tile mosaic, in Pompeii, species, spirit, shepherd god, daughters, Karya, Balanos, Morea.

Defination from the web:
hamadryad, found in Pompeii. Hamadryads (Ἁμαδρυάδες) are Greek mythological beings that live in trees. ... If the tree died, the hamadryad associated with it died as well. For that reason, dryads and the gods punished any mortals who harmed trees. ...