Erica Hannickel, Empire of Vines: wine culture in America (Philadelphiae: University of Pennsylvania Press, 2013. ISBN 978-0-8122-4559-2) p. 138 et alibi
Encyclopaediae et enumerationes
Stephen Facciola, Cornucopia: a source book of edible plants (Vista: Kampong Publications, 1990) pp. 216, 339
Elias Yanovsky, Food plants of the North American Indians (Vasingtoniae: Department of Agriculture, 1936) p. 43