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Psilocybe cubensis
Pakalensis
A modern Mexican collection named for a Maya king, with one genuinely odd party trick under the microscope: a rusty, reddish-brown spore print that drops light rather than the usual heavy purple-black.
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The short version
Pakalensis is a more recent Psilocybe cubensis line, reportedly collected near the Maya ruins of Palenque in Chiapas, Mexico around 2012 to 2013 and named after the great king Pakal. Its claim to fame is an unusual rusty, reddish-brown spore print that deposits light rather than the typical dense purple-black. The documented history is thin and mostly vendor-sourced, so treat the backstory as community lore.
Straight talk
Fact vs. legend
There is a lot of folklore around this strain. Here is which bits are real, side by side.
What we actually know
- It is a plain Psilocybe cubensis, the same species as every other cube on the shelf. Not a hybrid and not a distinct species, despite the exotic name.
- The name references Palenque in Chiapas, Mexico, and the Maya ruler Pakal the Great, who reigned over the city in the 7th century.
- It is widely described as a wild Mexican collection (a landrace-type line) rather than a hobbyist isolation from an existing strain.
- By repeated account it is NOT the older, long-circulating Palenque line. They are treated as two separate collections from broadly the same region.
- Its most distinctive documented trait is the spore print itself, reported again and again as a rusty reddish-brown that drops light, which is unusual for a species famous for heavy purple-black prints.
What the community says
- The story goes that it was found near the sacred ruins of Palenque in the Chiapas jungle around 2012 to 2013 by a collector remembered as Pekon Metsa, who reportedly sent a wild print along to a distributor for release.
- By that same account locals are said to have pointed to three different cubensis collections, plus a couple of Panaeolus, growing in a single field, which is offered as the reason this line is held apart from the older Palenque strain.
- The name is said to honour Pakal the Great, tying a modern spore line to a roughly 1,400 year old Maya king. A lovely bit of branding, and impossible to verify.
- Some vendors lean on the Palenque mystique to imply an ancient ceremonial pedigree. There is no documented evidence the specific mushroom in this print was ever used by anyone historically.
The story
A king's name on a very young mushroom
Pakalensis carries one of the more romantic names in the cubensis world. It points to Palenque, the ruined Maya city in the jungles of Chiapas, Mexico, and to Pakal the Great, the ruler who presided over the place at its height in the 7th century. It is a grand backstory for what is, in plain terms, a fairly recent addition to the hobby.
By most accounts the line was put together from a wild collection made near Palenque around 2012 to 2013, reportedly by a collector remembered as Pekon Metsa, who is said to have passed a print along to a distributor for release. From there it spread the way these things do, hand to hand, vendor to vendor. The catch is that almost everything written about it traces back to that one origin note rather than to any peer-reviewed work, so the framing is community lore, not documented science.
It is easy to confuse Pakalensis with the older Palenque line. By repeated account they are not the same collection, just two cubensis lines that happen to share a corner of the map.
The reddish print is the real story
Where Pakalensis genuinely earns its own page is under glass. Psilocybe cubensis is famous for a dense, near-black spore drop, and most strains deliver exactly that. Pakalensis is repeatedly described as the odd one out, leaving a rusty, reddish-brown print that comes down light rather than caking on heavy. Whether that reflects something real about the line or just batch-to-batch variation in how prints are taken, it is the one trait that shows up in description after description, so it is worth expecting in the lab.
The species
Meet Psilocybe cubensis
Pakalensis is a collector’s line of a single, well-travelled species. Psilocybe cubensis was first written up in 1906 by the American mycologist Franklin Sumner Earle, from a specimen found in a cattle field in Cuba, which is where the name comes from. He originally called it Stropharia cubensis; Rolf Singer moved it into the genus Psilocybe in 1948.
The genus name is a tidy bit of Greek: psilos (“bare”) plus kubē (“head”), for the smooth, peelable skin of the cap, so the full name reads roughly as “the bare-headed mushroom from Cuba.”
- Family
- Hymenogastraceae (older books say Strophariaceae)
- Genus
- Psilocybe (Fr.) P. Kumm., 1871
- Species
- Psilocybe cubensis (Earle) Singer, 1948
- Basionym
- Stropharia cubensis Earle, 1906
- This product
- Pakalensis, a collector’s cultivar of the species
- Type locality
- Cuba (where it was first named)
How you’d know it
Field marks
These describe the mature mushroom for reference and identification.
Starburst cap
Reported as golden to tawny brown, often with a slightly rayed or starburst look, and edges that can curl and lift a little rather than flattening into a clean disc. As with any cube, expect plenty of variation.
Solid white stem
Described as a sturdy, solid white stipe. Like other cubensis it carries a partial veil that tears as the cap opens, usually leaving a ring (annulus) higher up that catches falling spores.
Ripening gills
Crowded gills that start pale and grey, then darken as the spores mature. On most cubes they finish near-black, though on this line the mature print itself is reported as more rust than black.
Blue bruising
Handle or damage the flesh and it bruises blue-green, the standard Psilocybe reaction as enzymes convert psilocybin to psilocin, which then oxidises into blue pigment.
Where it comes from
A dung-lover with a wanderer’s history
Psilocybe cubensis is coprophilic, a fancy word for dung-loving. In the wild it lives on the droppings of big grazing animals, classically cattle and water buffalo, fruiting from warm, humid pasture. It does not grow on wood and it does not partner with tree roots.
You’ll find it across the warm parts of the world: the Gulf Coast of the United States, Mexico, Central and South America, Southeast Asia and Australia. It was named from Cuba, but where the lineage truly began is an open question. A 2026 study describing its closest wild relative in southern Africa suggests the deep roots are Old-World, the mushroom having apparently travelled with grazing herds long before anyone gave it a Latin name.
The main event
Under the microscope
This is what you actually bought the spores for. Put a print or a drop from a syringe on a slide and here’s what shows up.
- Shape & size. Smooth, thick-walled and subellipsoid, like a slightly squashed rugby ball, roughly 11.5–17 µm long by 8–11 µm wide (the figures Paul Stamets settled on).
- The germ pore. Look for a single pale, flattened dot at one end. That’s the one thin spot in the wall where, in nature, a mushroom would begin, and a real cubensis hallmark.
- Pale alone, dark in a crowd. A single spore looks honey-amber with the light behind it; only in a mass do they read deep purple-brown to black. So a near-black print but pale spores on the slide is normal optics, not a dud.
- Expect a lighter, redder sample. Pakalensis is repeatedly described as a sparse, rusty-brown depositor rather than the dense purple-black typical of cubensis, so plan for a thinner print and a slightly warmer hue in mass. Individual spores still read pale amber alone and only darken when piled together, and the trait may owe as much to how a given print was taken as to the line itself.
- What you’ll need. Find the field at 100×, study shape and the germ pore at 400×, and get the wall crisp at 1000× under oil. A touch of methylene blue or KOH lifts the contrast.
- The legal bit, and why it’s true. A dormant spore carries no psilocybin or psilocin at all; that chemistry only appears later in living tissue. That is exactly why the spores are legal to own and study in the UK.
Choose your format
Print, syringe, vial or swab?
Same lab-grade genetics in every option. The honest difference is shelf life versus how soon you’re at the scope.
Spore print
Keeps longest
Spores dropped straight onto sterile foil. Stored cool and dry it outlasts everything else here, so it’s the one to reach for if you’re building a collection to keep for years.
Spore syringe
Ready tonight
Spores suspended in sterile water, ready to go straight onto a slide. The quickest way to be looking down the microscope this evening. Comes in 3 mL and 12 mL.
Vial & swab
Compact
A sealed glass vial is a tidy middle ground; a sterile swab is the most travel-friendly, robust little format for adding a strain to your reference set.
At a glance
The spec sheet
- Species
- Psilocybe cubensis
- Strain
- Pakalensis (collector’s cultivar)
- Spore print
- Rusty, reddish-brown and light in deposit
- Spore shape
- Subellipsoid, smooth, thick-walled, with a germ pore
- Spore size
- ~11.5–17 × 8–11 µm
- Basidia
- Mostly 4-spored, ~20–30 × 7–10 µm
- Wild habitat
- Coprophilic, on herbivore dung & warm pasture
- Climate
- Subtropical to tropical
- Intended use
- Microscopy, research & collecting only
Dig deeper
Further reading
Independent, non-commercial sources, no shops, just good information.
- Psilocybe cubensis on Wikipedia: the species overview.
- The genus Psilocybe: taxonomy and the family reshuffle.
- Index Fungorum: the formal nomenclature record.
- Proc. Royal Society B (2026): the African wild-relative study.
Common questions
Frequently asked
Yes, for microscopy and study. A dormant spore carries no psilocybin or psilocin, so the spores themselves are not a controlled substance in the UK. We sell them strictly for microscopy, taxonomy and collecting, never for cultivation.
By repeated account, no. Both names point to the Palenque region of Chiapas, Mexico, but Pakalensis is described as a separate, more recent wild collection rather than the older Palenque line that has been around for years. They are best treated as two distinct cubensis collections from the same area.
That is the trait Pakalensis is best known for. Cubensis normally drops a heavy near-black print, but this line is reported again and again to leave a lighter, rusty reddish-brown deposit. Take it as a useful thing to expect under the scope rather than a guarantee, since print colour and density can shift with how a print is taken.
Smooth, thick-walled, oval to subellipsoid spores, pale amber individually and darker in a mass, each with a small flattened germ pore at one end. Standard cubensis dimensions, roughly 11 to 17 by 8 to 11 microns. Find them at 100x, study at 400x, and bring the wall sharp at 1000x under oil.
Treat it as lore. The name honours Pakal the Great and the ruins at Palenque, and the collection story is genuinely tied to that region, but the detailed backstory is vendor-sourced rather than documented in scientific literature. The connection is cultural and geographic, not evidence that this particular mushroom had any historical ceremonial use.
Cool, dark and dry. A fridge (not freezer) suits syringes and vials; a print keeps happily in a sealed bag somewhere cool. Stored well, a print stays viable for study for years, though a light depositor like this one may simply give you a thinner sample to work from.
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For microscopy, taxonomy and collecting only.Sold for legal research. Not for cultivation. Spores contain no controlled substances. We trust you to be responsible.