RT Journal Article SR Electronic(1) A1 Lachance, Marc-AndréYR 2016 T1 Paraphyly and (yeast) classification JF International Journal of Systematic and Evolutionary Microbiology, VO 66 IS 12 SP 4924 OP 4929 DO https://doi.org/10.1099/ijsem.0.001474 PB Microbiology Society, SN 1466-5034, AB Yeast systematics has wholeheartedly embraced the phylogenetic approach. Central to this has been the unspoken convention that taxa at all ranks be strictly monophyletic. This can result in a proliferation of small genera and instances of nomenclatural instability, counter to the expected benefit of phylogenetic systematics. But the literature abounds with examples, at all taxonomic levels, where paraphyly is a reality that can no longer be ignored. The very concepts of Bacteria or Archaea, under the constraint of monophyly, are in peril. It is therefore desirable to effect a shift in practices that will recognize the existence of paraphyletic taxa., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.001474