Clathrus columnatus, commonly known as the column stinkhorn, is a saprobic species of basidiomycete fungus in the family Phallaceae. Similar to other stinkhorn fungi, the fruiting body, known as the receptaculum, starts out as a subterranean "egg" form. As the fungus develops, the receptaculum expands and erupts out of the protective volva, ultimately developing into mature structures characterized by two to five long vertical orange or red spongy columns, joined at the apex. The fully grown receptaculum reaches heights of 8 cm (3+1⁄4 in) tall. The inside surfaces of the columns are covered with a fetid olive-brown spore-containing slime, which attracts flies and other insects that help disseminate the spores.

The species has a widespread distribution, and has been found in Africa, Australasia, and the Americas. It may have been introduced to North America with exotic plants. Although once considered undesirable, the fungus is listed as edible. It is found commonly in mulch.

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