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Crataegus heterophylla is a small tree of about 3 m (9.8 ft) in height, sometimes up to 10 m (33 ft); often semi-evergreen in character, with unusually variable leaves for a hawthorn. Some leaves are entirely smooth-edged, or have just a few (sometimes three) teeth at the apex only. These leaves are oblong, or ovate in shape. Other leaves are ...
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 (/ 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 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.
The leaves are 5–10 cm (2.0–3.9 in) in length and often drop in late summer due to defoliation by leaf diseases. The tree seems to suffer little from the early loss of its leaves. Among the earliest in the genus to bloom, downy hawthorn also has earliest ripening fruit, which decorate the defoliated tree in late summer and early fall.
The best known species is Rhaphiolepis indica (Indian hawthorn) from southern China, grown for its decorative pink flowers, and popular in bonsai culture. Rhaphiolepis umbellata (Yeddo hawthorn) from Japan and Korea has blunter leaves and white flowers. It is the hardiest species, tolerating temperatures down to about −15 °C (5 °F).
Crataegus marshallii is a species of hawthorn known by the common name parsley hawthorn. [4] It is native to the southeastern United States. [5] The leaves of C. marshallii are finely dissected and decorative. The dainty flowers, small red fruit, and beautiful bark add to the ornamental value of this species.
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.