Helianthus californicus Nutt. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Asterales family Asteraceae genus Helianthus species Helianthus nuttallii Name Homonyms Helianthus californicus DC. Helianthus californicus Nutt. ex Torr. & A.Gray Helianthus californicus Nutt.