Citation

USDA 2005: United States Department of Agriculture, Agricultural Research Service, National Genetic Resources Program. Germplasm Resources Information Network (GRIN) [Online database]. 2005. Panax quinquefolius. Beltsville (MD): National Germplasm Resources Laboratory. [Accessed 2015 June 4]. Available from: http://www.ars-grin.gov/cgi-bin/npgs/html/tax_search.pl.