Prunus spinosa Prunus spinosa Prunus spinosa, called blackthorn or sloe, is a species of flowering plant in the rose family Rosaceae. It is native to Europe, western Asia, and locally in northwest Africa. It is also locally naturalised in New Zealand, Tasmania and eastern North America. "Prunus spinosa" is a large deciduous shrub or small tree growing to tall, with blackish bark and dense, stiff, spiny branches. The leaves are oval, long and broad, with a serrated margin. The flowers are about in diameter, with five creamy-white petals; they are produced shortly before the leaves in early spring, and are hermaphroditic and
Prunus rivularis Prunus rivularis Prunus rivularis, known variously by the common names creek plum, hog plum, or wild-goose plum is a thicket forming shrub. It prefers calcareous clay soil or limestone-based woodland soils. This deciduous plant belongs to the rose family, Rosaceae, and is found mainly in the central United States. It is a shrub consisting of slender stems with umbel clusters of white blossoms. The fruit is a drupe that resembles a large berry; though it has a bitter taste, it serves as a source of food for birds and other wildlife. ""Prunus"" is Latin for plum, whereas ""rivularis"" means being