The life cycle of this fungus begins innocuously enough. It starts as a pale, egg-shaped structure partially buried in the soil — soft and white and entirely unremarkable, the kind of thing you might walk past without noticing. But as it matures, the egg splits open and reveals what is hidden inside: long, bright red tentacle-like arms that extend outward and upward from the base, reaching into the air like the fingers of a hand opening from underground. Or, as countless people who have encountered it for the first time have described it, like something clawing its way out of the earth. The arms can reach up to ten centimeters or more in length, and their surface is covered in a dark, gelatinous slime called gleba — a substance that carries the fungus’s spores and is the source of that overwhelming, unmistakable smell of rotting meat.
Why Does It Smell Like Rotting Flesh?
The smell is not accidental and it is not a coincidence or an unfortunate side effect of the fungus’s biology. It is an evolutionary strategy of extraordinary effectiveness. The Devil’s Fingers fungus belongs to a group called the stinkhorns — fungi that have evolved to mimic the scent of decomposing organic matter specifically to attract flies and other carrion-feeding insects. Flies, responding to what they believe is the smell of dead flesh, land on the surface of the fungus in large numbers. As they crawl across the slimy, spore-laden surface, the spores attach to their bodies and legs. When the flies move on — to the next apparent food source, to another location entirely — they carry those spores with them, effectively acting as the fungus’s dispersal mechanism. The fungus has essentially hijacked the fly’s instincts, using the most effective possible signal — the smell of death — to ensure its spores travel as widely as possible.
This strategy is remarkably common among the stinkhorn family, and the Devil’s Fingers is simply the most dramatic practitioner of it. The smell is produced by chemical compounds that closely replicate the volatile organic compounds released by decomposing tissue — compounds that flies can detect at extremely low concentrations and from significant distances. By the time a fly has found the fungus and realized its mistake, the spores are already attached. The fungus has accomplished exactly what it needed to accomplish. The fly leaves, slightly confused, and the spores travel on. The cycle continues.
I Was Not Alone
As I read through the search results that morning, I found something that was both comforting and deeply unsettling in equal measure: I was very far from the first person to have this experience. People had been finding Devil’s Fingers mushrooms in their gardens and yards for generations, and the reactions were consistently the same. Panic. Confusion. The conviction that something terrible had happened. Some people had called the police, genuinely convinced they were looking at human remains or the aftermath of violence. Others had contacted wildlife authorities, certain they had found evidence of an injured or dead animal. Online forums were full of photographs submitted by terrified homeowners who had no idea what they were looking at. Some of the photographs showed gardens covered in multiple clusters of these red, claw-like growths, stretching out of the earth in several places simultaneously — an image that looked, in the photographs, like something from a horror film. Every person who had submitted one of these photographs had been as genuinely frightened as I was that morning. And every single one of them, upon learning the truth, had experienced the same strange mixture of relief and lingering unease.
