the root (no rank)
Bacteria (domain)
Proteobacteria (phylum)
Gammaproteobacteria (class)
Enterobacteriales (order)
Enterobacteriaceae (family)
Citrobacter (genus)
[hide inferior taxa]
Citrobacter amalonaticus (species)
Citrobacter braakii (species)
Citrobacter diversus (species)
Citrobacter freundii (species)
Citrobacter gillenii (species)
Citrobacter koseri (species)
Citrobacter murliniae (species)
Citrobacter rodentium (species)
Citrobacter sp. (species)
Citrobacter werkmanii (species)