Klasifikasi
Kingdom: Plantae
Subkingdom: Tracheobionta
Superdivisi: Spermatophyta
Divisi: Magnoliophyta
Kelas: Magnoliopsida
Subkelas: Caryophyllidae
Ordo: Caryophyllales
Spesies: Trichocereus macrogonus var. pachanoi (Britton & Rose) Albesiano & R.Kiesling
Sinonim
Cereus pachanoi (Britton & Rose) Werderm.
Echinopsis pachanoi (Britton & Rose) H.Friedrich & G.D.Rowley
Echinopsis santaensis (Rauh & Backeb.) H.Friedrich & G.D.Rowley
Echinopsis schoenii (Rauh & Backeb.) H.Friedrich & G.D.Rowley
Trichocereus macrogonus subsp. sanpedro M.H.J.van der Meer
Trichocereus pachanoi Britton & Rose
Trichocereus santaensis Rauh & Backeb.
Trichocereus schoenii Rauh & Backeb.
Trichocereus torataensis F.Ritter