Oerlikon: From the looks of those pics, you have a sample of peruvian torch (Trichocereus peruvianus), which is indeed a mescaline containing species. It could maybe be a T. bridgesii, as they tend to have long spines, but bridgesii the spines also tend to be spaced a little farther apart.
Good ways to help ID Trichocereus species, look at the aureole (where the spines insert into the cactus flesh), this area should be white. Also there is often a slight indentation or knock in the flesh a little below each set of spines (more prominent in san pedros). The ribs are most commonly 5-7 and reasonably rounded (especially in san pedros).
... oh yeah, and Trichocereus species have one central spine surrounded by a ring of smaller spines.
Good ways to help ID Trichocereus species, look at the aureole (where the spines insert into the cactus flesh), this area should be white. Also there is often a slight indentation or knock in the flesh a little below each set of spines (more prominent in san pedros). The ribs are most commonly 5-7 and reasonably rounded (especially in san pedros).
... oh yeah, and Trichocereus species have one central spine surrounded by a ring of smaller spines.