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Clathrus ruber is a species of fungus in the stinkhorn family, and the type species of the genus Clathrus. It is commonly known as the latticed stinkhorn, the basket stinkhorn, or the red cage, alluding to the striking fruit bodies that are shaped somewhat like a round or oval hollow sphere with interlaced or latticed branches. Although considered primarily a European species, Clathrus ruber has a widespread distribution that includes northern Africa, Asia, and Australia. It has been introduced to many areas, such as North America, through human activity.

The fruit body initially appears like a whitish "egg" attached to the ground by long cords. The egg has a delicate, leathery outer membrane enclosing the compressed lattice that surrounds a layer of olive-green spore-bearing slime called the gleba, which contains high levels of calcium that help protect the developing fruit body during development. As the egg ruptures and the fruit body expands, the gleba is carried upward on the inner surfaces of the spongy lattice, and the egg tissue remains as a volva around the base of the structure. The gleba has a fetid odor, somewhat like rotting meat, that attracts flies and other insects to help disperse the spores.