For years, the story of how magic mushrooms spread across the Americas seemed settled. Simple, even. Europeans brought cows to the New World in the 1500s. Cows carry dung. Psilocybe cubensis – the world’s most famous magic mushroom – loves dung. Therefore: cows brought the mushrooms. Mystery solved, move on.
Except a new species just blew that story apart.
Researchers at Stellenbosch University in South Africa recently confirmed that a mushroom long cultivated under the names “Natal Super Strength” and “Transkei” – two strains popular in the psychedelic community for being potent and easy to grow – isn’t P. cubensis at all. It’s a completely different species. Meet Psilocybe ochraceocentrata, named for the ochre-yellow blush at the centre of its cap, found growing on cattle dung in the grasslands of Zimbabwe and southern Africa.
It has the same habitat, a similar look and potency. But it’s a completely different evolutionary lineage.
When the team traced the genetic history of both species, they found that P. ochraceocentrata and P. cubensis shared a common ancestor. But the split happened roughly 1.5 million years ago, long before Europeans ever thought about sailing anywhere. Which raises an obvious and weird question: if cows didn’t bring P. cubensis to the Americas… how did it get there?
“Rather than cows importing the mushroom into the Americas, it now looks like the mushroom was already there, waiting.”
The new theory is almost more interesting than the old one. Rather than cows importing the mushroom into the Americas, it now looks like the mushroom was already there. And when cattle arrived in the 16th century, they didn’t introduce P. cubensis to a new continent. They just gave it the perfect growth medium it had been missing. A fortuitous meeting. A biological love story across deep time.
The researchers think the real dispersal story runs like this: while P. cubensis was already diversifying in South America millions of years ago, grazing herbivores were migrating out of Africa into Eurasia, carrying spores, spreading fungi across the Old World, slowly building the conditions for P. ochraceocentrata to emerge independently on a different continent, in different dung, in different soil.
P. cubensis and P. ochraceocentrata both produce psilocybin. Both love dung. Both spread via large grazing animals. But they got there by different roads, in different eras, on different landmasses.
“Strains people have been cultivating and consuming for decades, thinking they knew what they had when they didn’t.”
The researchers are quick to say more data is needed. African fungal diversity is massively undersampled, meaning there are almost certainly more species out there we’ve been misidentifying for years. Strains people have been cultivating and consuming for decades, thinking they knew what they had, when they didn’t.
Which is, honestly, a pretty good metaphor for the whole psychedelic space right now. We think we know the map. Turns out we’ve barely started drawing it.
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