Crataegus uniflora is a species of hawthorn

Crataegus

Crataegus , commonly called hawthorn or thornapple, is a large genus of shrubs and trees in the rose family, Rosaceae, native to temperate regions of the Northern Hemisphere in Europe, Asia and North America. The name hawthorn was originally applied to the species native to northern Europe,...

 known by the common name one-flowered hawthorn, or dwarf hawthorn. It is native to parts of the southeastern US. The plant is usually a small bush, but some forms can be a few meters tall. The flowers occur singly or in small clusters. The fruit are hairy and yellow to reddish in colour.