Crataegus persimilis

Crataegus persimilis is a species of hawthorn, known by the common names plumleaf hawthorn and broad-leaved cockspur thorn, native to southern Ontario, Canada, and the US states of New York, Pennsylvania, Ohio, Kentucky, West Virginia, and Virginia. It is widely cultivated, particularly in Europe, as an ornamental. Its sporadic distribution in its natural range and certain of its morphological characters leads authorities to consider it a probable naturally occurring hybrid, with its most likely parents being Crataegus succulenta (fleshy hawthorn) and Crataegus crus-galli (cockspur hawthorn). At least some specimens of this taxon are tetraploid. Some populations may be self-perpetuating by seed. The 'Prunifolia' cultivar is considered one of the top five trees for smaller gardens....read more on Wikipedia.