the root (no rank)
Eukaryota (domain)
Viridiplantae (kingdom)
Chlorophyta (phylum)
Trebouxiophyceae (class)
[hide inferior taxa]
Botryococcaceae (family)
Chlorellaceae (family)
Chlorellales (order)
Helicosporidium sp. (species)
Microthamniales (order)