the root (no rank)
Bacteria (domain)
Proteobacteria (phylum)
Alphaproteobacteria (class)
Rhizobiales (order)
Hyphomicrobiaceae (family)
Xanthobacter (genus)
[hide inferior taxa]
Xanthobacter autotrophicus (species)
Xanthobacter flavus (species)
Xanthobacter sp. (species)