Crataegus media var. crassa Hrabetová Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Rosaceae genus Crataegus species Crataegus media Name Homonyms Crataegus media var. crassa Hrabetová Crataegus media var. crassa Hrabetová ex Ker.-Nagy