A hybrid cultivar, Magnolia x thompsoniana, which is intermediate in character between M. virginiana and M. tripetala, is grown as a garden plant in the Eastern United States and in Europe. It was first raised in an English nursery more than 200 years ago (21). No varieties of sweetbay are recognized (14).
- Burns, Russell M., and Barbara H. Honkala, technical coordinators. 1990. Silvics of North America: 1. Conifers; 2. Hardwoods. Agriculture Handbook 654 (Supersedes Agriculture Handbook 271,Silvics of Forest Trees of the United States, 1965). U.S. Department of Agriculture, Forest Service, Washington, DC. vol.2, 877 pp. http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm
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