Hawthorn - Wikipedia

Hawthorn or hawthorne is a name given to a large group of shrubs or small trees, characterized by their small, apple-like fruits and thorny branches. Hawthorns belong to the genus Crataegus, family Rosaceae. Hawthorns provide food and shelter for many species of birds and mammals.

(Crataegus oxyacantha L)
larger

Species

C. aemula - Rome hawthorn
C. aestivalis - may hawthorn
C. altaica - Altai mountain thorn
C. ambigua - Russian hawthorn
C. ambitiosa - Grand Rapids hawthorn
C. anamesa - Fort Bend hawthorn
C. ancisa - Mississippi hawthorn
C. annosa - Phoenix City hawthorn
C. apiomorpha - Fort Sheridan hawthorn
C. arborea - Montgomery hawthorn
C. arcana - Carolina hawthorn
C. arrogans - dixie hawthorn
C. ater - Nashville hawthorn
C. austromontana - valley head hawthorn
C. azarolus - azarole
C. crus-galli - cockspur thorn
C. cuneata - hawthorn, ornamental thorn, Japanese hawthorn
C. douglassii - black hawthorn
C. intricata - thicket hawthorn
C. laevigata (also C. oxycantha) - English hawthorn, double-flowered hawthorn
C. marshalli - parsley-leaved hawthorn
C. mollis - downy hawthorn
C. monogyna - common hawthorn
C. nitida - glossy hawthorn
C. phaenopyrum - Washington hawthorn
C. pruinosa - frosted hawthorn
C. punctata - dotted hawthorn
C. sanguinea - redhaw hawthorn
C. succulenta - fleshy hawthorn
C. viridis - Winter King hawthorn, green hawthorn
etc.