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Comparison Trichocereus Riomizquensis & PC Pachanoi Hi Guys, I am pretty sure that the PC Trichocereus Pachanoi is actually what Friedrich Ritter described as Trichocereus Riomizquensis FR856. This type grows around Chuyllas near the Rio Mizque and as far as I am concerned, it is absolutely identical with the PC pachanoi. Friedrich Ritter sold seed of Trichocereus Riomizquensis throughout the world, what makes it very possible that most of the plants that we call PC were grown from his FR856 seed. Of course there is no way to actually prove it but I am 100% convinced that this is the case. Trichocereus Riomizquensis is no longer an accepted species and those plants are simply called "Trichocereus Pachanoi" these days. Now, I´ll add two pics. The b/w pic shows the FR856 while the other shows a PC Pachanoi. Pic is from Prier. Now, if that is actually the case, not every specimen of the PC is a clone.If all those plants were grown from the same FR856 seeds, the "PC Pachanois" of the world are actually related but not genetically identical. While some of them cannot mate with each other, some other plants known as PC Pachanoi CAN. Would love to hear your breeding experiences so let me know if you were able to pollinate your PC´s with pollen of someone elses PC. But that would only work it´s not a cutting from the same plant in your garden. Trichocereus Riomizquensis Trichocereus Pachanoi PC (Pic: Prier) Well yeah, please leave out anything about their chemical profile out of this discussion. But this is really interesting and I personally am really sure that the two are synonymous. I also think that Michael had the same impression recently, which is really cool because that means that this is not a brain fart.