Polynucleobacter difficilis
Polynucleobacter acidiphobus
Polynucleobacter cosmopolitanus
Polynucleobacter necessarius
(tree size 3)
Polynucleobacter rarus
Polynucleobacter asymbioticus
Polynucleobacter duraquae
Polynucleobacter wuianus
Polynucleobacter sinensis
Polynucleobacter yangtzensis
Polynucleobacter aenigmaticus
Polynucleobacter hirudinilacicola
Polynucleobacter meluiroseus
Polynucleobacter sphagniphilus
Polynucleobacter victoriensis
Polynucleobacter campilacus
Polynucleobacter paneuropaeus