Phylogenetic analysis of partial 16 S ribosomal gene sequences for the newly described haemoplasma species (shown in bold), other available haemoplasma species and selected non-haemoplasma Mycoplasma species. The phylogenetic tree was rooted to Clostridium innocuum [GenBank: M23732]. The tree was constructed by the neighbour-joining method. Evolutionary distances are to the scales shown. GenBank accession numbers are shown for all sequences.