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Psilocybe cubensis
Blue Meanie
The cube that borrowed its name from a completely different mushroom. A blue-bruising charmer with a tangled backstory and a clean, dependable purple-brown spore drop.
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Sold for microscopy, taxonomy and collecting only. Not for cultivation.
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The short version
Blue Meanie is a Psilocybe cubensis that famously shares its name with an unrelated species, Panaeolus cyanescens, the original "Blue Meanie". The cubensis line is known for how readily it bruises blue and for a heavy, reliable purple-brown spore print. Its origin is mostly vendor lore, and the hobby has long argued over whether it is even a distinct strain.
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
- Genetically it is a plain Psilocybe cubensis, not a hybrid and not a separate species.
- It shares its common name with a completely different mushroom, Panaeolus cyanescens, which is the original and arguably the 'real' Blue Meanie. The two belong to different genera.
- The cubensis line has a reputation for pronounced blue bruising on cap and stem, the classic Psilocybe colour change you see across the genus.
- It drops a heavy, dependable spore print in the standard cubensis dark purple-brown to near-black, which is why collectors keep it on the shelf.
What the community says
- The name is said to trace back to the blue villains of the 1968 Beatles film Yellow Submarine, a nickname that by most accounts really belonged to Panaeolus cyanescens and got borrowed for this cube.
- The story goes that the original samples came from somewhere in Australia, though this is unverified and the documented trail is thin.
- By most accounts an old spore vendor remembered as 'The Keeper' (reportedly named Shane) renamed or reintroduced the line, and is the same figure tied to several other strain names of the era.
- As with B+, it was once whispered to be a cubensis crossed with Psilocybe azurescens. It isn't, and such a cross has never been validated.
- It is sometimes billed as unusually potent, but the hobby's old hands flatly reject the idea that any cube is reliably stronger than another. A cube is a cube.
The story
A name that belongs to someone else
Blue Meanie is one of the more confusing names in the cubensis world, and the confusion is the whole story. There are two completely different mushrooms wearing this nickname. The original is Panaeolus cyanescens, a slim, fast-bruising tropical species that has been called Blue Meanie for decades. The other is this one, an ordinary Psilocybe cubensis that picked up the same name somewhere along the way and never let go.
How that happened is, by most accounts, a piece of pre-internet spore-trading muddle. The popular telling points to an old vendor remembered as "The Keeper" (reportedly a man named Shane), who is said to have renamed or reintroduced a cubensis isolate as "Blue Meanie", apparently in the late 1980s. The same name turns up in the lore of several other strains of the period. Whether the relabelling was a genuine mix-up or done on purpose to ride on the reputation of the real Blue Meanie, nobody can say for certain. Treat all of it as community lore rather than documented history.
Ask the old hands whether "Blue Meanie cubensis" is even a real strain and you will get a shrug. It is a plain cubensis with a borrowed name, and the borrowing is half the fun.
The hybrid that never was
Like a few famous cubes, Blue Meanie has also collected the rumour that it is a cross between Psilocybe cubensis and Psilocybe azurescens. It makes for a good tale and a tidy explanation for all that blue bruising, but the two are wildly different mushrooms living completely different lives, one a warm-climate dung-lover and one a cold-coast wood-rotter. No such cross has ever been validated. What you have here is simply a cubensis that happens to bruise enthusiastically and carries a borrowed, memorable name.
The species
Meet Psilocybe cubensis
Blue Meanie 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
- Blue Meanie, 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.
Tan to caramel cap
Light brown to golden-tan, convex when young and tending to flatten and pale toward a whitish-grey as it ages. Often keeps a low central bump and can crack at the surface in dry conditions.
Pale, fibrous stem
White to cream, fibrous and sturdy. A leftover partial veil leaves a ring (annulus) around the stipe that usually ends up dusted purple-brown from falling spores.
Eager blue bruising
Its calling card. Handle the flesh and it bruises blue-green readily, an enzyme turning psilocybin into psilocin which then oxidises into blue pigments. Classic Psilocybe, and said to be more pronounced here than on many cubes.
Darkening gills
Crowded and pale grey when young, deepening to purple-brown and near-black as the spores ripen, then dropping the heavy print collectors prize.
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.
- 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
- Blue Meanie (collector’s cultivar)
- Spore print
- Dark purple-brown to near-black, heavy depositor
- 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 research. A dormant spore contains 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.
No, and this trips a lot of people up. The original Blue Meanie is Panaeolus cyanescens, a different species in a different genus. What you have here is a Psilocybe cubensis that borrowed the name, most likely through old vendor relabelling. One easy tell under the scope: Panaeolus drops jet-black, lemon-shaped spores, while this cubensis drops the usual dark purple-brown.
No. That is an old marketing tale, the same one attached to B+. Cubensis and Psilocybe azurescens live completely different lives, one on dung in the tropics and one on wood on cold coastlines, and no such cross has ever been validated. This is a plain Psilocybe cubensis.
Smooth, subellipsoid, thick-walled spores, pale amber individually and dark purple-brown in a mass, each with a small flattened germ pore at one end. Find them at 100x, study them at 400x, and get the wall sharp at 1000x under oil.
If you want something that keeps for years on a shelf, take the print, and this strain is a generous depositor. If you want to be at the microscope tonight, take the syringe. The vial and swab sit in between on convenience.
Cool, dark and dry. A fridge (not freezer) is ideal for syringes and vials, while prints keep happily in a sealed bag somewhere cool. Kept well, a print stays viable for study for years.
What customers say
Reviews
Well packaged sterile kit. With clear instructions, these are a breeze to use.
Spores galore…
Easy and well packaged
Great service, order arrived in perfect time. Will definitely be using this site in future!
Fantastic, the only place I will consider buying spores from.
Excellent spore syringes dare I say it probably the best I’ve ever had no problems whatsoever and 3ml will [REDACTED] no problem . Really do rate these and I would highly recommend to anyone looking for some top grade spores .
Reply from Cylocybe
Awesome review, but I do hope you are speaking about legal gourmet spores and not our microscopy spores for injecting into as our products aren’t sold for that. Thanks.
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Questions and answers
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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.