This is a bibliographic reference for content in the New York Metropolitan Flora Project.
Reference
Gammon, M. A. et.al. 2007. Molecular and morphological evidence reveals introgression in swarms of the invasive taxa Fallopia japonica, F. sachalinensis, and F. x bohemica (Polygonaceae) in the United States. Amer. J. Bot. 94: 948-956.