There are many varieties of porcelain-berry (Ampelopsis brevipedunculata) in the Pittsburgh area. Most have maple-shaped leaves (below), but I occasionally find the intricate leaves showcased above.
No matter the variety, you can identify them in October by their porcelain-like berries.
Unfortunately, Ampelopsis is invasive. When you see Pittsburgh hillsides engulfed like this, it’s probably porcelain-berry. This hill is along Pocusset in Schenley Park.
(photo of berries by Jonathan Nadle, all other photos by Kate St. John)