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Crataegus (/ k r ə ˈ t iː ɡ ə s /), [2] commonly called hawthorn, quickthorn, [3] thornapple, [4] May-tree, [5] whitethorn, [5] Mayflower or hawberry, is a genus of several hundred species of shrubs and trees in the family Rosaceae, [6] native to temperate regions of the Northern Hemisphere in Europe, Asia, North Africa and North America.
Crataegus azarolus is a species of hawthorn known by the common names azarole, azerole (from Arabic: الزُّعرُورَة, romanized: az-zu'rūra) and Mediterranean medlar. It is native to the Mediterranean Basin and is a common plant there, growing on sites comparable to those the European common hawthorn grows on.
Crataegus pennsylvanica, known as the Pennsylvania thorn, [2] is a species of hawthorn native to Delaware, New York, North Carolina, Ontario, Ohio, and Pennsylvania, [2] that grows to about 8 m in height. [2] The mature trees have few thorns. [2]
Crataegus punctata is a species of hawthorn known by the common names dotted hawthorn [2] [3] or white haw that is native to most of the eastern United States and eastern Canada. While some sources claim it is the state flower of Missouri , [ 4 ] the actual legislation does not identify an exact species. [ 5 ]
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.
Crataegus laevigata, known as the Midland hawthorn, [3] English hawthorn, [3] woodland hawthorn, [3] or mayflower, is a species of hawthorn native to western and central Europe, from Great Britain (where it is typically found in ancient woodland and old hedgerows [4]) and Spain, east to Romania and Ukraine.
Crataegus douglasii is a compact erect bushy shrub growing to 8–9 metres (26–30 feet) tall with a trunk of up to 10 centimetres (4 inches) thick. [4] It is covered in fan-shaped green leaves about 2.5–5 cm (1–2 in) long [4] with teeth along the distal margin.
Crataegus mexicana is a species of hawthorn known by the common names tejocote, manzanita, tejocotera and Mexican hawthorn. It is native to the mountains of Mexico and parts of Guatemala, and has been introduced in the Andes. [2] The fruit of this species is one of the most useful among hawthorns.