Ivy ID help request

Hello,
could anyone help me to identify this climbing plant? It was on the side of a building in Cambridge, Massachusetts.

http://www.pbase.com/mshields/image/100657755

Thanks in advance,

MShields

 

Not an ivy Hedera, it is Japanese Creeper Parthenocissus tricuspidata.

This is closely related to Virginia Creeper P. quinquefolia, but has simple trilobate leaves, not the palmately divided leaves with five leaflets of Virginia Creeper.

 

Thanks very much!