Ceratozamia mexicana var. longifolia (Miq.) J.Schust. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Cycadopsida order Cycadales family Zamiaceae genus Ceratozamia species Ceratozamia mexicana Name Homonyms Ceratozamia mexicana var. longifolia (Miq.) Dyer Ceratozamia mexicana var. longifolia (Miq.) J.Schust. Ceratozamia mexicana var. longifolia Miq.