Vine-like plant with fruit that looks like a " ball of smaller balls" green at first, turning to dark blue/puple/black in the Fall. Fruit at the end of a longish stem. Smaller balls have diameters approx 3/8" , clustered into spheres of diameter 1.5-2" . Leaves alternate and " pointy" about 2-3 inches long.
Flowers yellow-ish, also arranged spherically.
Grows in coastal Maine, among other places I imagine.