Family: Rosaceae
[Crataegus columbiana var. occidentalis (Britton) R.D.Dorn, more..., Crataegus divida Sargent, Crataegus integriloba Sargent, Crataegus macracantha var. divida (Sarg.) Kruschke, Crataegus macracantha var. integriloba (Sarg.) Kruschke, Crataegus macracantha var. occidentalis Eggl., Crataegus macracantha var. pertomentosa (Ashe) Kruschke, Crataegus occidentalis Britton, Crataegus pertomentosa Ashe, Crataegus succulenta var. macracantha (Lodd. ex Loudon) Eggl., Crataegus succulenta var. occidentalis (Britton) E.J.Palmer in Fernald, Crataegus succulenta var. pertomentosa (Ashe) E.J.Palmer]
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