Echinopsis oxygona

Echinopsis oxygona

Echinopsis oxygona (Link) Zucc.
Engl.: Easter Lily Cactus.
Bot. syn.: Cereus multiplex, Cereus oxygonus, Echinopsis multiplex, Echinopsis paraguayensis, Echinopsis schwantesii.

I have no articles for this botanical term, but there might be some for the next level down (if found).