Lophophora williamsii is a schedule 1 drug plant. All parts of it growing or not are Illegal to possess without a DEA license. I can assure you cactus bowl sellers do not have DEA licenses. I don't know the date of it becoming scheduled so perhaps it was available in the past. It is clearly on the list now. I don't grow any cactus so don't know about this genus and its other spp , but California's own law forbids growing ANY species in this genus. Tim Chapman > I do not agree with you. Lophophora williamsii is a well known plant. It is > similar to L. diffusa, but they can be distinguished. When I lived in L.A., > I was somewhat of an expert on cactus and grew many. Among my plants was L. > williamsii, and of course it flowered for me.