Endemic of Goiás and Mato Grosso do Sul in Brazil.

Scientific classification
Kingdom:Plantae
(unranked):Angiosperms
(unranked):Eudicots
(unranked):Core eudicots
Order:Caryophyllales
Family:Cactaceae
Subfamily:Cactoideae
Tribe:Trichocereeae
Genus:Echinopsis
Species:E. calochlora

From my collection

My Echinopsis:
• Hybrid (white) flic.kr/p/2bY4PnU
• E. eyriesii flic.kr/p/2d1QjUE
• Hybrid (pink / broad petals) flic.kr/p/2d8M4w8

via Flickr https://flic.kr/p/2iAZQ5x