Trivia: Which of these plants is NOT a cactus?
Queen of the night
Golden barrel
Ocotillo
Barbary fig
The correct answer is Ocotillo
So why is this answer correct? : Queen of the night, golden barrel, and barbary fig are all members of the cactus family. However, ocotillos, which are desert plants found throughout the American Southwest and Mexico, are part of the Fouquieriaceae family that also includes desert wonders such as Adam trees and boojum trees.