the root (no rank)
Bacteria (domain)
Proteobacteria (phylum)
Gammaproteobacteria (class)
Chromatiales (order)
Chromatiaceae (family)
Thiocystis (genus)
[hide inferior taxa]
Thiocystis gelatinosa (species)
Thiocystis violacea (species)
Thiocystis violascens (species)