Smooth sumac

Description:

The crimson berries are edible but sour and contain a large seed. The berries will remain throughout the winter.

Habitat:

Spotted near the Umtanum Creek in eastern Washington. Cascade Mountain foothills.

Notes:

Native Americans ate the young sprouts as a salad. The fruit is sour and contains a large seed, but can be chewed (to alleviate thirst) and made into a lemonade-like drink. Deer forage the twigs and fruit. (Wikipedia)