- I am guessing that this facebook page for the group Pacific Northwest Mushroom and Identification Forum would be your best bet at quickly getting some decent feedback.
- I found a lot of ads for molecular IDing mushrooms. Location of intended use was not obvious at that level. Regular updating of their search or compare algorhythm with more recent findings would be important.
- Maybe contact the Pacific NW Research Station (part of the US Forest Service). They may not have a mycologist there, but they might be able to give you some direction for further inquiries.
- You could peruse the OSU Forestry Dept (or whatever it is). That's where all the research in the state on forestry issues would be in Oregon. There would probably be a similar group somewhere in Washington State.