Collection location: Bolinas Ridge, Marin Co., California, USA [Click for map]
Thiers recognizes this species in his Agaricales of California, p16. With its rusty stains on the volva, it does also look like a white form of A. pachycolea.
velosas are the most common of the vaginate mushrooms to show white forms, but otherwise the vaginata group (in CA at least) as a whole is such a jumbled mess that how can we know what to call them when we see a white version…of something? I think it safe to say that white-phase amanitas don’t deserve their own species designation (despite it having been done in the past), any more that albinos in other groups of organisms do. since we seem to rely so much on color for these photo IDs, not sure how we should handle these unvouchered and sometimes even unnamed white amanitas…
I’m not completely sure why Ron couldn’t make the change. I thought what I implemented was that the author could be changed by anyone if there were no associated observations. If there are associated observations and there is a user that owns all of those observations, then that user can change it. In any case the admin user can change it which is how I made the actual change. My sense is that the current restrictions are a bit too strong, but I’m not sure what would be a better plan. One solution would be to create different classes of users. I write a proposal up and send it out to the general list to see what people think.
Tried to effect name change per Rod’s suggestion but was also rejected.
Contrary to the information for this name, the name Amanita alba Gillet is not valid. It was originally used to apply to Amanita ovoidea. It has been generated by several authors since. Given the current status of knowledge of sect. Vaginatae in California, I have a problem with what name to give it. “Amanita alba sensu Thiers” certainly included white specimens of Amanita velosa…perhaps that is all it included. It would be necessary to go through all Thiers collections of “A. alba” in order to know. Maybe the best thing to do is call it “Amanita alba sensu auct. calif.” for the time being. Unfortunately, I was not able to enter the preferred name.
I wonder how many white taxa are in the Pacific Coast collection of section Vaginatae? Can anyone distinguish more than one? In my brief collecting experiences (and later lab work), I think I found only white specimens of Amanita velosa. I’d certainly be interested in hearing about other white taxa of the Vaginatae. RET