Overview
Devil’s Fingers (Clathrus archeri), also known evocative of its appearance as the octopus stinkhorn, is an eerie and bizarre saprotrophic fungus native to Australia and New Zealand that has successfully naturalized across Europe and North America. Emerging from a subterranean gelatinous ‘egg,’ it erupts into four to eight bright scarlet, tentacle-like arms coated with a foul-smelling black slime, resembling an alien creature or a severed octopus hand bursting from the forest floor.
Biology and Physical Characteristics
Development begins as a partially submerged, dirty-white to olive gelatinous egg sac (volva) roughly two inches in diameter. When moisture and temperature conditions align, the egg splits open as the compressed scarlet arms rapidly expand. The arms are porous, spongy, and deep crimson-red, arching gracefully outward. The upper surfaces are coated with gleba—a dark olive-black, sticky spore matrix that emits a pungent, nauseating odor reminiscent of rotting carcass or putrid flesh, designed to attract blowflies and carrion beetles.
Behavior and Ecology
Ecologically, Clathrus archeri functions as a vital saprotroph, decomposing organic lignins and celluloses in damp forest soils and wood debris. Rather than relying on wind currents to disperse its spores like gilled mushrooms, it employs specialized entomophilic dispersal (zoochory). Drawn by the intense olfactory mimicry of decaying meat, visiting flies land on the sticky gleba to feed, inadvertently coating their feet and mouthparts with spores that are carried across the forest landscape.
Conservation and Human Impact
Clathrus archeri is classified as Least Concern, thriving as an adaptable, expanding species that has successfully established wild populations across European and North American woodlands following accidental importation in military supplies or agricultural wool in the early 20th century. Although completely non-toxic, its foul odor and grotesque appearance make it inedible, while its ecological role as an efficient wood recycler benefits forest soil regeneration.
Interesting Factoid
When emerging from its gelatinous white egg sac, the Devil’s Fingers fungus looks and smells so much like a rotting alien creature that hikers frequently report finding severed monster tentacles in the woods.
Last updated: October 2026