This cactus blooms during the cool hours of the day and will turn black in a few hours. A rosey red fruit will form in the weeks after to blossom is gone. The botanical name for this plant is Echinopsis pachanoi.
60 USD, $5 to ship
https://www.dailypaintworks.com/fineart/jean-krueger/san-pedro-cactus/715272
Jean Krueger Fine Art 