Panaeolus cyanescens is not a Psilocybe at all. It sits in a separate genus, and for anyone doing spore microscopy that is the most useful thing to know about it, because the two are genuinely easy to tell apart on a slide once you know what you are looking for.
The spore print is jet black rather than the dark purple-brown of cubensis. The spores are lemon-shaped in profile, smooth and thick-walled, with a broad germ pore, and they run slightly larger than cubensis at roughly 12-15 micrometres. Put a cubensis slide and a Pan Cyan slide side by side and the difference in both colour and outline is obvious.
ISORestocking
Restocking
ISORestocking
RestockingBlue Meanie means two different things
This causes more confusion than any other name in the trade. In Australia, "Blue Meanie" is the common name for Panaeolus cyanescens. Elsewhere, and particularly in the United States, "Blue Meanie" refers to a Psilocybe cubensis strain that is not this species at all.
Both are real, both are sold under that name, and they are not interchangeable. If you want the Panaeolus, it is on this page. If you want the cubensis strain of the same nickname, it is in the classic cubensis collection. Check the species line on any listing before you buy, here or anywhere else.
Australian collections
The Pan Cyan lines in this library come out of Australian collections: Byron Bay and Eungai in New South Wales, along with the TTBVI line. Where a collection has a named isolate, such as the Eungai Iceberg or Red Spore isolates, it is listed under that name rather than merged into a generic Pan Cyan listing.