Spiroplasma kunkelii Whitcomb et al. 1986 Whitcomb R.F. Chen T.A. Williamson D.L. Liao C. Tully J.G. Bové J.M. Mouches C. Rose D.L. Coan M.E. Clark T.B. Spiroplasma kunkelii sp. nov.: characterization of the etiological agent of corn stunt disease. 1986 36 2 170 178 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-36-2-170