One type of this object at Dodona was considered an oracle of Zeus.
Spirits associated with varieties of these objects include the Meliai, who tended to Zeus, and the caryatids. Leto gave birth to Apollo and Artemis while holding one of these objects on Delos. One type of this object at Dodona was considered an oracle of Zeus. Dryads were the nymphs of these objects. Philemon and Baucis were transformed into these in Ovid's Metamorphoses, and Daphne was turned into a laurel one as she was fleeing Apollo.  For 10 points, name these objects, one of which provided the wood for the Argo.
Spirits associated with varieties of these objects include the Meliai, who tended to Zeus, and the caryatids.
trees