Charles Ellicott Commentary Psalms 137:2

"Upon the willows in the midst thereof We hanged up our harps." — Psalms 137:2 (ASV)

Willows. —It is perhaps not necessary to attempt to identify the trees mentioned in this verse, since the touching picture may only be a poetical way of expressing the silence during the exile of all the religious and festal songs. The ‘ ereb’ is certainly not the willow, a tree not found in Babylonia, but the poplar (Populus Euphraticus) .