Clavibacter michiganensis californiensis Yasuhara-Bell and Alvarez 2015 Yasuhara-Bell J. Alvarez A.M. Seed-associated subspecies of the genus Clavibacter are clearly distinguishable from Clavibacter michiganensis subsp. michiganensis 2015 65 3 811 826 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.000022 25481293