Crataegus × vailiae
Encyclopedia
Crataegus × vailiae is a 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,...

 hybrid that primarily occurs in Virginia
Virginia
The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

, Tennessee
Tennessee
Tennessee is a U.S. state located in the Southeastern United States. It has a population of 6,346,105, making it the nation's 17th-largest state by population, and covers , making it the 36th-largest by total land area...

, North Carolina
North Carolina
North Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...

 and Georgia
Georgia (U.S. state)
Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788...

. It appears to be a hybrid between C. uniflora
Crataegus uniflora
Crataegus uniflora is a species of hawthorn 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 a member of series Macracanthae, probably C. calpodendron
Crataegus calpodendron
Crataegus calpodendron is a species of hawthorn native to much of the eastern US and to Ontario, Canada. The common name late hawthorn refers to the flowering time, which is later than most North American hawthorns.-References and external links:...

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