SUMMARY: A total of 190 strains of slowly growing scotochromogenic and non-photo-chromogenic mycobacteria, randomly selected from a larger group of 1498 strains, has been analysed using a weighted pair-group method. Dendrograms were constructed from the correlation coefficient data. was clearly distinguished from all other scotochromogens. Although not precisely defined, one cluster of pigmented organisms, currently identified only as Group IIIB, appears to compromise a taxon intermediate between and Among the non-photochromogens is clearly distinct from the others, while the aggregate would appear to represent only host-adapted variants of the taxon and appear to be very closely related, and only slightly different from The possibility that these last three represent distinct taxa is considered.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error