Prunus virginiana

Chokecherries ("Prunus virginiana"), also known as the bitter-berry, Virginia bird cherry, and western chokecherry, are shrubs or small trees that are native to The United States, Canada, and some parts of Mexico. They grow to be around 4.9 m (16 ft 1 in).
Description.
Chokecherry classifies as a suckering shrub or a tree. They grow quite tall, around 1 – 6 meters.
Their leaves are oval with coarse, sharp edges. The flowers grow about 38.1–76.2 cm (15–30 in) long in late spring (well after chokecherry leaves appear).
The fruits are about 1 cm (3⁄8 in) across. They range in color from bright red to black. They have a very astringent taste, both somewhat sour and somewhat bitter. The fruits are sweetest when they are very ripe "berries" (actually drupes). These are dark in color.
Characteristics.
Chokecherries are very high in antioxidants, sharing this trait with chokeberries. This does contribute to confusion between the two. The wild chokeberry is often considered a weed, since it hosts the tent caterpillar. This caterpillar eats tree leaves, robbing trees of energy and heightening the chance that they die. Often people enjoy the cultivars of the plant, such as "Canada Red" and "Schubert". Both have purple leaves when mature and "Goertz", another cultivar, has a palatable taste in it's fruit. The chokecherry is closely related to the well-known black cherry of eastern North America. The name "chokecherry" is also used for the related Manchurian cherry, or Amur chokeberry.
Food use.
For many Native American tribes, chokecherries are very important and are part of pemmican, an Indian staple food. The bark of the root is used to ward off or treat colds, fevers and stomach maladies by Indians. It's also used in a ceremonial smoking mix known as kinnikinnick. The chokecherry fruit can be eaten when fully ripe, but if not, the fruit contains a toxin. It can also be used to make jam or syrup, with the use of sugar. The Plains Indians pound up the whole fruit in a mortar, from which they make cakes.
The stone of the fruit is poisonous. Chokecherry is toxic to most animals with segmented stomachs, especially after the leaves have wilted. This action produces cyanide, which is very toxic to most living things. It also makes the plant sweet, making farmer's lives harder by keeping their cows away from it. However, birds and game animals eat the berries when they're ripe. It's also used to craft wine in the Western United States.
Ecology.
The plant hosts many types of moths and butterflies.