Jasminocereus (meaning "jasmine-like cereus", referring to the flowers) is a genus of cacti from the Galapagos Islands. Its common name is cereus thourasil. It is extremely rare in cultivation because of the very strict rules for removing plants or seeds from the islands, owned by Ecuador.
Jasminocereus species grow up to 23 feet. Their flowers are 5-11 cm, waxy, white and fragrant. They are made of a long tube ending in white to olive green with black seeds.