Pandionis is a phyle which had eleven demes at the time of the creation of the phyle, which is when the phyle was created as part of a group of ten phylai.
The names of the demes of Pandionis are Angele, Konthyle, Kydathenaion, Kytheros, Myrrhinous, Oa, Lower Paiania, Upper Paiania, Prasiai, Probalinthos, Steiria.
References
Pandionis Wikipedia(Text) CC BY-SA