Tài liệu tham khảo WikiPedia: Synsepalum http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl... http://www.biodiversitylibrary.org/page/163139#pag... http://apps.kew.org/wcsp/furtherInformation.do?nam... http://www.tropicos.org/Name/50310597
