dryade

dryad; forest tree, sciaphilous in young state

From Old French driade (“wood nymph”), from Latin Dryadem (“dryad”), from Ancient Greek Δρυάς (Druás, “dryad”), from δρῦς (drûs, “oak”), from Proto-Indo-European *derew(o)- (“tree, wood”); cf. Proto-Indo-European *dóru.