Calendula arvensis var. micrantha Ball Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Calendula species Calendula arvensis Name Homonyms Calendula arvensis subsp. micrantha (Tineo & Guss.) Arcangeli, 1894 Calendula arvensis var. micrantha Ball Calendula arvensis subsp. micrantha (Tineo & Guss.) Holmboe