of Harvard University Plant Image Database Hetman, Jon. "Magnolia macrophylla". Arnold Arboretum of Harvard University website, 13 May 2019. Accessed 20 April 2020. Friedman, William (Ned)."Killer magnolias".Posts from the Collections, Arnold Arboretum of Harvard University website, 20 July 2019. Accessed 20 April 2020. An ecological study of Magnolia macrophylla in Gaston County, NC Magnolia macrophylla images at bioimages.vanderbilt.edu Field Guide to the Rare Plants and Animals of Florida Online: Magnolia ashei Magnolia macrophylla Distribution Map Interactive Distribution Map of Magnolia macrophylla macrophylla Endangered flora of the United States Trees of Northeastern Mexico Trees of the Southeastern United States Garden plants of North America Ornamental trees