Lee, I.-M., Martini, M., Marcone, C., and Zhu, S.F. "Classification of phytoplasma strains in the elm yellows group (16SrV) and proposal of 'Candidatus Phytoplasma ulmi' for the phytoplasma associated with elm yellows." Int. J. Syst. Evol. Microbiol. (2004) 54:337-347. [Original title: "Classification of phytoplasma strains in the elm yellows group (16SrV) and proposition of 'Candidatus Phytoplasma ulmi' for the phytoplasma associated with elm yellows and 'Candidatus Phytoplasma chinense' for the phytoplasma associated with cherry lethal yellows in China."]

This taxonomic name was not validly published at the time of submission of the corresponding sequence entry or entries.