Lophophora flower fest

Several of my plants are flowering right now, including many of the large undetermined Lophophora plants I bought earlier this spring. The plants were sold as Lophophora williamsii but body morphology and flower color suggest that many of them are actually Lophophora diffusa. Even though they flower, it is still difficult to determine the species of some of the plants conclusively, so I suspect them to be of hybrid origin. A handful of flower photos are included below.