Meliae - Nymphs that were specifically born to the Ash Tree, they are supposed to be rare and sacrade . So far two in the story are known. Blakley and Midori. There are more eventually but those are the two at this point. they are supposed to be rare because it is said they truly are the blessed of the gods. They are supposed to have been born from the drops of Blood of the gods. Some say that these Nympsh have physchic power and can see parts of the future. Plural is Meliai . Sometimes theya re are called melia. usually the term is only used for the female side of the nymphs.
Dryad - Nymphs that are specific to the Trees and bushes.