Corylus maxima f. purpurea (Loudon) Rehder Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Betulaceae genus Corylus species Corylus maxima Name Homonyms Corylus maxima var. purpurea (Loudon) Rehder Corylus maxima f. purpurea (Loudon) Rehder Corylus maxima f. purpurea (Loudon) C.K.Schneid.