== Links ==
*[http://ecocrop.fao.org/ecocrop/srv/en/cropView?id=1191 Ecocrop]
*[http://www.ars-grin.gov/cgi-bin/npgs/html/tax_search.pl?Helianthus%20annuus GRIN]
*[http://www.ipni.org/ipni/simplePlantNameSearch.do?find_wholeName=Helianthus+annuus&output_format=normal&query_type=by_query&back_page=query_ipni.html IPNI]