Synonyms
Crataegus ferentaria Sarg.
Crataegus coloradensis A.Nelson
Crataegus glandulosa var. minor (Loudon) Farw.
Crataegus divida Sarg.
Crataegus glandulosa macracantha Lindl.
Crataegus microsperma Sarg.
Crataegus macracantha var. occidentalis (Britton) Eggl.
Crataegus macracantha var. minor Loudon
Crataegus beckiana Sarg.
Mespilus macracantha (Lodd. ex Loudon) Wenz.
Crataegus succulenta var. macracantha (Lodd. ex Loudon) Eggl.
Crataegus ogdensburgensis Sarg.
Crataegus occidentalis Britton
Crataegus douglasii Macoun
Crataegus sanguinea Torr. & A.Gray