''Crataegus collina'' is a type of Crataegus, hawthorn that is closely related to Crataegus punctata, ''C. punctata'', the dotted hawthorn, and sometimes considered to be the same species. A sample of ''C. collina'' and ''C. punctata'' has suggested that ''C. collina'' is polyploid, and ''C. punctata'' is diploid, but a wider sample is needed to confirm that this is generally the case.

References

Crataegus, collina Flora of the United States Taxa named by Alvan Wentworth Chapman {{Crataegus-stub