1. Plantae
  2. Tracheophyta
  3. Magnoliopsida
  4. Caryophyllales
  5. Cactaceae

Ariocarpus retusus

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Caryophyllanae
order      Caryophyllales
family       Cactaceae
Higher taxa
Subordinate taxa
subspecies         Ariocarpus retusus subsp. trigonus