the root (no rank)
Bacteria (domain)
Chlorobi (phylum)
Chlorobiaceae (family)
Chlorobium (genus)
[hide inferior taxa]
Chlorobium bathyomarinum (species)
Chlorobium limicola (species)
Chlorobium phaeobacteroides (species)
Chlorobium phaeovibrioides (species)
Chlorobium sp. (species)
Chlorobium tepidum (species)
Chlorobium vibrioforme (species)