Griffiths HM, Sinclair WA, Smart CD, Davis RE. The phytoplasma associated with ash yellows and lilac witches'-broom: 'Candidatus phytoplasma fraxini'. Int J Syst Bacteriol 1999; 49:1605-1614.
Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 49, part 4 of the IJSB. Int J Syst Bacteriol 2000; 50:5-7.
not validly published
The description of "CandidatusPhytoplasma fraxini" was discussed by the Subcommittee on the taxonomy of mollicutes  because the name has been assigned to a group of strains which, according to their 16S rRNA gene sequences, are not identical and a type strain has been identified to represent the group.Publication:
Bradbury JM. International Committee on Systematics of Prokaryotes. Subcommittee on the taxonomy of mollicutes. Minutes of the interim meetings, 13 and 19 July 2000, Fukuoka, Japan. Int. J. Syst. Evol. Microbiol. 2001; 51:2227-2230.
The subcommittee considered that the assignment of "CandidatusPhytoplasma fraxini" to a group is not strictly in the spirit of the proposal of Murray and Schleifer .Publication:
Murray RG, Schleifer KH. Taxonomic notes: a proposal for recording the properties of putative taxa of procaryotes. Int J Syst Bacteriol 1994; 44:174-176.