FOOTNOTES:
[13] Several common names have been applied to this disease, among which "bunch" and "brooming" have most frequently been used. The authors strongly feel that the accepted common name should be "bunch" for the following reasons: (1). The term is very descriptive of the symptoms of the disorder. (2). It is the accepted name of a disease of pecan and hickory species that is very similar if not identical to the one occurring on walnut species. (3). The names "brooming" and "witches'-broom" have already been applied to diseases caused by fungi.
[14] Waite, M. B. Notes on Some Nut Diseases with Special Reference to the Black Walnut. Ann. Rept. Northern Nut Growers Assoc. 23:60-67, 1932.
[15] Becker, Gilbert, My Observations on Witches Broom Disease of Black Walnut Trees. Annual Report Northern Nut Growers Assoc. 31:106-109, 1940.
[16] Hutchins, Lee M., and Wester, Horace V. Graft—transmissible Brooming Disease of Walnut (Abstract.) Phytopathology 37: 11, Jan. 1947.
[17] Gravatt, G. F., and Stout, Donald C. Diseases Affecting the Success of Tree Crop Plantings. Ann. Rept. Northern Nut Growers Assoc. 39: 60-68. 1948