Not sure if this is Red or Purple Chokeberry. They are cultivated as ornamental plants! The name chokeberry refers to the astringency of the fruits which must be cooked — they’re used for wine, jam, syrup, tea, etc. (Birds do not mind the astringency and eat them freely.) Rose family. Native. (Thanks to Alert Flowerophile John for loaning me his Newcomb Guide, which helped me identify this plant.)

Chokeberry (Pyrus)