Quick answer: “Blue Meanie” means two different mushrooms, and most of the confusion online comes from mixing them up. The Blue Meanie strain is a named line of Psilocybe cubensis that traces to Australia and is known for caramel caps that bruise a deep blue-green where handled. The Blue Meanie species is the common name of Panaeolus cyanescens, a small, gray-white, black-spored dung mushroom of the tropics, which is a different genus altogether. Spore vendors, including us, sell the cubensis strain.
Under a microscope the two are easy to tell apart: cubensis spores are purple-brown; Panaeolus spores are jet black. Spores of both are legal for microscopy in 46 states; germinating either is not.
Looking for Blue Meanie spores?
Our Blue Meanie spore syringe is a 10 cc syringe, and it ships the same business day. Orders over $100 ship free, and our spore syringe packs save you up to 40%.
Intended use. Our Blue Meanie spore syringes (the Psilocybe cubensis strain) are sold for microscopy, taxonomy and educational use only. This guide covers naming, history, what the mushroom looks like and what its spores look like under a microscope. It does not cover cultivation, effects or dosing, and we do not answer questions about them.
In this guide
- Two mushrooms, one name
- The Blue Meanie cubensis strain: history and origin
- Why “Blue Meanie”
- What the cubensis strain looks like
- What Panaeolus cyanescens looks like
- Telling them apart under the microscope
- Bluey Vuitton and Albino Bluey Vuitton
- Legal status of Blue Meanie spores
- Frequently asked questions
- Sources
Two mushrooms, one name
If you search “Blue Meanie mushroom” you will find pages describing a golden-capped cubensis, pages describing a small gray mushroom with black spores, and pages that describe both as if they were the same thing. They are not.
| Blue Meanie (strain) | Blue Meanie (species) | |
|---|---|---|
| Scientific name | Psilocybe cubensis, strain “Blue Meanie” | Panaeolus cyanescens (older name Copelandia cyanescens) |
| Genus | Psilocybe | Panaeolus |
| Reported origin | A cubensis line from Australia, in circulation since the 2000s | A wild species of tropical and subtropical pastures worldwide, including Hawaii, Florida and Australia |
| Cap | Caramel to golden-brown, 2–6 cm, bruises deep blue-green | Pale gray to whitish, drying to white or tan, 1.5–4 cm, thin, bruises blue |
| Stem | White, slender, with a ring | Thin, long, gray-white, no ring |
| Spore print | Dark purple-brown | Jet black |
| Spores | Subellipsoid, purple-brown, ~11–17 × 7–11 µm | Lemon-shaped in face view, black, ~12–15 × 7–11 µm |
| Other names | “Blue Meanies,” “BM” | “Pan cyan,” “Pans,” “Hawaiian,” “Copelandia” |
When a vendor lists “Blue Meanie” without a species, it is almost always the cubensis strain. Vendors who sell Panaeolus cyanescens spores usually say “Pan cyan” or give the Latin name.
The Blue Meanie cubensis strain: history and origin
The cubensis line called Blue Meanie is generally described as an Australian collection, with most retellings placing it in southeastern Australia, where naturalized cubensis grows in cattle pasture. It reached North American spore catalogs in the 2000s and has been a fixture since. As with almost every named strain, there is no dated record of who collected it or when; the Australian origin is consistent across sources but rests on community accounts.
One piece of science is relevant. The 2023 Current Biology genome study that compared cultivated cubensis with wild populations used Australian naturalized cubensis as its wild reference, and found that Australian populations hold more genetic diversity than the inbred cultivated lines. An Australian-origin strain is therefore plausible as a distinct collection. The same study also sequenced a line labeled BlueMeanieITW.
Why “Blue Meanie”
The name comes from bruising. Both mushrooms called Blue Meanie stain a vivid blue where handled or damaged, more strongly than most. The phrase itself was borrowed from the villains of the 1968 Beatles film Yellow Submarine, and it was in use for Panaeolus cyanescens in Australia long before the cubensis strain existed. The cubensis strain inherited the name later because it bruises the same way, which is how one nickname ended up on two mushrooms.
What the cubensis strain looks like
- Cap: caramel to golden-brown with a paler margin, convex flattening with age, typically 2–6 cm across, smaller on average than Golden Teacher or B+. The defining trait is the bruising: blue-green marks appear quickly and darkly on the cap and stem wherever the flesh is touched.
- Gills: attached, closely spaced, gray to purple-brown at maturity.
- Stem: white to cream, slender, with a ring that collects a dark spore deposit; bruises blue readily.
- Spore print: dark purple-brown, like all cubensis.
What Panaeolus cyanescens looks like
- Cap: small (1.5–4 cm), thin-fleshed, hemispherical to bell-shaped, pale gray or light brown when moist and drying to almost white; the surface often cracks in dry conditions. Bruises blue.
- Gills: gray becoming mottled black as spores mature, a hallmark of the genus Panaeolus (the name means “all variegated”).
- Stem: long, thin (2–4 mm), gray-white, no ring.
- Spore print: jet black.
The two are unlikely to be confused in the field: one is a golden, ringed, medium-sized mushroom and the other a small, pale, thin one. The confusion is entirely a naming problem.
Telling them apart under the microscope
The spores of the two mushrooms look different under a microscope.
- Color. At 400×, cubensis spores are translucent purple-brown; Panaeolus spores are opaque black, so dark that internal structure is hard to see without strong light.
- Shape. Cubensis spores are subellipsoid, an oval with one flatter side. Panaeolus cyanescens spores are lemon-shaped (limoniform) when viewed face-on and flattened when viewed from the side, with a prominent germ pore.
- Size. Panaeolus cyanescens spores are about 12–15 µm long, and Psilocybe cubensis spores are about 11–17 µm long, so their sizes overlap. Color and shape are what separate them.
Bluey Vuitton and Albino Bluey Vuitton
Bluey Vuitton is not a Blue Meanie isolation. It is a cross of Panama and Melmac Penis Envy, credited to a breeder called Silly Cybin. Albino Bluey Vuitton is the albino line derived from it.
Legal status of Blue Meanie spores
Spores of both mushrooms contain no psilocybin or psilocin, so under federal law and the law of 46 states they are not a controlled substance; the DEA confirmed the federal position in writing in January 2024. California and Florida restrict spores, Georgia and Idaho ban them, and we do not ship Psilocybe spores to those four states. Germinating spores of either species is illegal under federal law. Our state-by-state legal guide has every statute.
Frequently asked questions
What is the Blue Meanie mushroom?
Either a named strain of Psilocybe cubensis from Australia (what spore vendors sell) or the species Panaeolus cyanescens (a small, black-spored wild mushroom). The two share a nickname and nothing else.
Is Blue Meanie a Psilocybe cubensis?
The strain is. The species called Blue Meanie is Panaeolus cyanescens, a different genus.
Why is it called Blue Meanie?
For its strong blue bruising, with the name borrowed from the villains in the Beatles’ Yellow Submarine. The nickname was used for Panaeolus cyanescens first and later for the cubensis strain.
Where does the Blue Meanie strain come from?
It is consistently described as an Australian cubensis collection, in circulation since the 2000s; no dated record exists.
How do I tell Blue Meanie cubensis from Panaeolus cyanescens under a microscope?
Spore color and shape. Cubensis spores are purple-brown and oval; Panaeolus cyanescens spores are black and lemon-shaped.
What is Bluey Vuitton?
Bluey Vuitton is not a Blue Meanie isolation. It is a cross of Panama and Melmac Penis Envy, credited to a breeder called Silly Cybin. Albino Bluey Vuitton is its albino line.
Blue Meanie vs. Golden Teacher: what is the difference?
Both are cubensis. Blue Meanie is smaller with caramel caps and much heavier blue bruising; Golden Teacher is larger with a gold cap and pale margin. Their spores are indistinguishable by light microscopy.
Are Blue Meanie spores legal?
Yes, for microscopy, in 46 states. Not in California, Florida, Georgia or Idaho, where we do not ship.
Do you sell Blue Meanie spores?
Yes: a lab-prepared Blue Meanie spore syringe (the cubensis strain, in a 10 cc syringe) with a sterile needle and a 30-day guarantee, for microscopy and taxonomy use only.
Sources
- Stamets P. (1996). Psilocybin Mushrooms of the World. Ten Speed Press. (Species descriptions and spore measurements for Psilocybe cubensis and Panaeolus cyanescens.)
- McTaggart A.R. et al. (2023). “Domestication through clandestine cultivation constrained genetic diversity in magic mushrooms relative to naturalized populations.” Current Biology. doi:10.1016/j.cub.2023.10.059 (Australian naturalized cubensis as the wild reference population).
- FungiAtlas, “Blue Meanies (Panaeolus cyanescens)” species page. fungiatlas.com
- DEA Diversion Control Division letter on the status of spores (January 2, 2024). PDF
Blue Meanie spore syringe (Psilocybe cubensis)
Our Blue Meanie spore syringe is a 10 cc syringe filled in our ISO-7 cleanroom, with a sterile needle included. Orders placed by 1 p.m. Eastern on a weekday ship the same day, to the 46 states where spores are legal. You get free shipping on orders over $100, up to 40% off with our 3-, 5- and 10-packs, and a 30-day warranty. It is sold for microscopy and taxonomy use only.
