The history of Psilocybe galindoi ATL#7 and Psilocybe tampanensis Pollock shows how cultivation names, vendor names, and taxonomy do not always stay aligned. For years, growers and smartshops treated these lines as if they represented clearly separate “truffle producers.” In practice, the distinction was never that stable. Pollock was always the Florida type line of Psilocybe tampanensis. ATL#7, by contrast, passed through several identities — Atlantis, galindoi, even mexicana in some conversations — before the picture became clearer. What matters now is that both lines we offer at Sporeworks.eu, Psilocybe tampanensis ATL#7 spore print and Psilocybe tampanensis Pollock spore print, belong to the same species complex now understood under Psilocybe tampanensis.
Pollock as the type line
Pollock is the easier line to place. In formal taxonomy, it is the anchor. Psilocybe tampanensis was described in 1978 by Guzmán and Pollock from material collected near Tampa, Florida. “Pollock” is therefore not just a trade label. It points back to the original collection that fixed the species name itself. When a line is presented as Psilocybe tampanensis: Pollock, it is being tied directly to the historical Florida material that defined tampanensis in the first place.
That gives Pollock unusual importance in the world of microscopy. It is not simply another commercial line. It is the reference line against which the later “truffle” discussion is measured.
ATL#7 and the old galindoi identity
ATL#7 followed a different path. The line came from a Georgia collection made in 2001 and later became known for one trait above all others: strong sclerotia production. That is why ATL#7 became so important in cultivation circles. It was not simply another tampanensis line. It became the line many growers associated with heavy stone production, delayed fruiting, and dependable performance in jars and trays. Workman’s selection work is what gave ATL#7 its long commercial afterlife.
The reason older growers still call ATL#7 “galindoi” is historical. In 2008, Workman compared ATL#7 microscopically against published descriptions and concluded that it fit Psilocybe galindoi better than Psilocybe atlantis. At the time, that was a reasonable interpretation. The spores and cystidia seemed to point more closely toward the Mexican taxon than toward the Atlantis name that had been attached to the Georgia material. As a result, ATL#7 began circulating widely as a kind of “galindoi var. Georgia.” That label stuck hard enough that later smartshop and cultivation discussion never fully let go of it.
Why both lines are treated as tampanensis now
The later correction is what collapses the difference. Sporeworks now states clearly that recent genetic testing has shown ATL#7 to be a variety of Psilocybe tampanensis, while noting that Pollock remains the type collection. In other words, the line once sold as Atlantis or galindoi-like material has been folded back into tampanensis.
That does not mean every older use of the name Psilocybe galindoi was careless. It means the cultivation and commercial names drifted away from the type material. In hobby language, the confusion lasted because the line was close enough to carry the wrong name for a long time. But for the lines growers actually bought, fruited, and turned into “truffle” products, the old labels eventually became more historical than taxonomic.
So what is the difference today between Pollock and ATL#7, if both are tampanensis? The cleanest answer is that the difference is collection history and domestication history, not species-level identity. Pollock is the Florida type line: the original named reference. ATL#7 is the Georgia line that spent years being selected for larger stones and dependable performance. Same species. Different line histories.
How ATL#7 and Pollock differ in practice
That distinction matters because it reflects two different kinds of value.
Pollock matters because it is the historical reference line. It is the tampanensis collection tied directly to the formal species description and remains important for anyone interested in the original Florida lineage.
ATL#7 matters because it became the commercially influential line. It is the Georgia collection that moved through the old Atlantis / galindoi confusion and became strongly associated with large sclerotia and dependable cultivation behavior. In practical stone-producing circulation, ATL#7 became the better-known line.
This is the most useful way to compare them. Not as different species, but as different tampanensis lineages with different histories inside the same broader story.
The Dutch truffle connection
The Dutch “truffle” market was never built on abstract taxonomy alone. It was built on reliable sclerotia-forming lines. Erowid’s older notes on philosopher’s stones already show that by the 2000s Dutch smartshop culture was working with underground growths identified as Psilocybe tampanensis or mexicana. That is the commercial frame in which these lines mattered. Not because every label was taxonomically perfect, but because certain lines produced stones consistently enough to anchor a real market.
This is also where the older Sporeworks shipping history becomes important. In cultivation memory, Sporeworks was one of the key sources from which mexicana and later galindoi-like and tampanensis-like lines reached Dutch growers in the early 2000s. First came Mexicana A. Later, when Pollock and the line that became widely known as galindoi ATL#7 were also available, they entered the same ecosystem. It is widely considered that this movement of reliable stone-forming genetics helped establish part of the practical foundation of the Dutch truffle industry.
That should be read as cultivation history rather than as a single-cause industrial claim, but the pattern is clear: mexicana first, then tampanensis-related lines, then smartshop stabilization and branding.
Why the taxonomy still causes confusion
From there, the Dutch industry did what commercial cultivation usually does. It selected for performance, reliability, and yield, then repackaged those selections under smartshop names that often blurred the original taxonomy. That is one reason this subject still causes confusion today.
If someone approaches the topic through formal taxonomy, Pollock appears straightforward and ATL#7 appears messy. If someone approaches it through smartshop history, both look like part of the same “truffle” tradition. Both views are valid. Taxonomically, Pollock is the cleaner line because it connects directly to the type collection of Psilocybe tampanensis. Historically, ATL#7 became the more commercially influential line because it was heavily selected and better known in stone-producing circulation.
What we offer at Sporeworks.eu
For Sporeworks.eu, that history has a practical consequence. We offer authentic Psilocybe tampanensis ATL#7 spore print and authentic Psilocybe tampanensis Pollock spore print. We also maintain ATL#7 spore syringes and Pollock spore syringes within the same tampanensis framework as part of our broader microscopy offering.
These are not random relabelings or generic “truffle strains.” They are historically important tampanensis lines, each with a distinct place in cultivation history. Pollock represents the original Florida reference line. ATL#7 represents the Georgia line that moved through the old Atlantis / galindoi confusion and eventually came back under tampanensis after later review.
If you want to explore related material, you can also browse our exotic spore prints, exotic spore syringes, and microscopy combos.
Both truffle strains discussed here are catalogued together in the strain library for quick comparison.
In the end, it is all tampanensis
That is the cleanest way to frame the subject today. The old comparison “galindoi ATL#7 versus tampanensis Pollock” made sense for a time because the names in circulation had not yet settled. Now the stronger formulation is simpler: both are tampanensis.
The difference lies not in species identity, but in provenance, selection history, and the role each line played in the culture that eventually shaped the Dutch “truffle” market.
That is why these lines remain worth discussing. They are not just products. They are part of the historical bridge between field collections, microscopy, cultivation, and the commercial history of philosopher’s stones in Europe.
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