''Crataegus flabellata'' is a species of

hawthorn Hawthorn or Hawthorns may refer to: Plants * '' Crataegus'' (hawthorn), a large genus of shrubs and trees in the family Rosaceae * ''Rhaphiolepis'' (hawthorn), a genus of about 15 species of evergreen shrubs and small trees in the family Rosace ...

known by the common name fanleaf hawthorn. It is native to the northeastern United States and adjacent Canada. It is intermediate in appearance between ''C. macrosperma'' and ''C. chrysocarpa''. ''C. macrosperma'', which occurs throughout the range of ''C. flabellata'' and also in the southeastern U.S., is often misidentified as ''C. flabellata''.

Varieties

''Crataegus crudelis'' Sarg. is a form of ''C. flabellata'' from

Quebec Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...

that has very long thorns (up to 10 cm). The two

varieties Variety may refer to: Arts and entertainment Entertainment formats * Variety (radio) * Variety show, in theater and television Films * ''Variety'' (1925 film), a German silent film directed by Ewald Andre Dupont * ''Variety'' (1935 film), ...

''C. flabellata'' var. ''grayana'' ( Eggl.) E.J. Palmer and ''C. flabellata'', var. ''flabellata'' differ in that the first has 20 stamens per flower, and the latter has 10 stamens, but in other features the two varieties are variable and the features overlap.

References

flabellata Trees of the Northeastern United States Flora of North America Flora without expected TNC conservation status {{Crataegus-stub