Crataegus succulenta var. occidentalis Britton Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Rosaceae genus Crataegus species Crataegus macracantha Name Homonyms Crataegus succulenta var. occidentalis (Britton) E.J.Palmer Crataegus succulenta var. occidentalis Britton Crataegus succulenta var. occidentalis (Britton) E.J.Palmer ex Fernald