the “cokeri” that they were undoubtedly refering to is cokeri sensu Thiers, a very different beast from the eastern form, which this is absolutely obviously not. But it’s not cokeri sensu Thiers either, with that membranous annulus. The photo of Amanita cokeri in the Agaricales of CA does kinda look like this mushroom, but not if you go deep. Sometimes, it takes an amanitologist…