Crataegus crus-galli f. crus-galli Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Rosaceae genus Crataegus species Crataegus crus-galli Name Homonyms Crataegus crus-galli var. crus-galli Crataegus crus-galli f. crus-galli