Ok, did the review. The article looks great, only a few minor comments below. I made some copyedits as I went through, hopefully they're not troubling. I know next to nothing about mycology though, so I can't say much about the technical end of things, unfortunately. Mark Arsten (talk) 18:20, 17 October 2012 (UTC)[reply]
Lead
"Described as new to science in 1971" Is this the right way of saying it? Sounds odd to me for some reason... could be Ok though.
"Several chemical tests can be used to help identify the mushroom: a drop of dilute (3–10%) potassium hydroxide (KOH) solution will turn the tubes pale red, nitric acid (HNO3) turns the tubes an orange-yellow color, and a solution of Iron(II) sulfate (FeSO4) causes the flesh to turn pale grey." "Turn" is used three times here, is there a good way around that?
"One source advises caution when selecting this species for the table" I'd consider naming the source here.
I changed source to "field guide", but don't think it's necessary to name the authors or the book (those interested can look at the citation); "advising caution" is not out of the ordinary for mushroom books, which usually are very circumspect when making edibility recommendations. Sasata (talk) 18:48, 17 October 2012 (UTC)[reply]
Similar species
There's some repetition of "association" in this subsection.
"it is commonly found from central California to southern Oregon,[7] but has also been reported in Washington and British Columbia (Canada)." Might want to note "further north" here, for people who aren't familiar with California vs Washington. Mark Arsten (talk) 18:20, 17 October 2012 (UTC)[reply]