The name Acanthocalycium is derived from the Greek words "ácantha" meaning "thorn/spine", and "cályx" that means "spiky chalice". The genus Acanthocalycium was first described by Curt Backeberg in the 1930s. These cacti that grow from the Argentine Andes to the Pampas, due to the climatic diversity (humid due to the proximity of the Parana River and the sea, dry for inland areas), have the characteristic of possessing a strong adaptability to a wide range of temperatures. The plants of this genus have a green-gray stem, initially globular which over time assumes a columnar habit. Acanthocalycium is a decorative species that is appreciated for its beauty and for the particular bright colors of its abundant blooms.