Dildo cactus

Dildo cactus is a common name used for several species of long, narrow cactus, especially


 * Acanthocereus tetragonus
 * Brachycereus nesioticus
 * Pilosocereus royenii

In addition, dildo is a common name of Opuntia stricta, and Pilosocereus polygonus is known as the Bahama dildo.