|Commonly known as the White King
Bolete. I suspect that it will require a critical examination in order
to understand where these white species fit into the wide gamut of B.
edulis variations. There is a very similar taxon from Europe called
B. edulis f. albus. What is called B. barrowsii
locally has somewhat of a broad, if not even strange, range -- it can
be found from Late Summer to Early Fall in the high elevations of the Sierra
Nevada, as well as in the Coastal areas under Live Oak. Whether it is the
same species remains to be seen. Could it be that what we have on the Coast
is a white form of B. aereus? The macrochemical
reactions do not support that hypothesis, but who knows.