Mushrooms of Cascadia: An Illustrated Key

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A ‘filler’ is an additive, or an ingredient that either serves to add bulk or weight to the end product, but that has no discernible health benefit. There are no ‘fillers’ used in Host Defense products. Rather, both the mushroom mycelium and the fermented rice substrate in our supplements have been researched, tested, and shown to offer health-supporting benefits.*

Written by renowned mycologist Mike Beug, Mushrooms of Cascadia: An Illustrated Key is a comprehensive mushroom identification field guide designed for everyone from the novice mushroom enthusiast to expert mycologists.

This up-to-date guide offers beautiful photos and descriptions of many mushroom species found in the Cascadia region of the Pacific Northwest, with identifications on everything from commonly foraged mushrooms to the rarely-seen, at-risk species.

Mushrooms of Cascadia was compiled as an illustrated key with easy-to-decipher language to make mushroom identification simple and accessible.

Highly respected in his field, Beug is a researcher, lecturer, author, and a professor emeritus at The Evergreen State College where he has personally had an impact on many of our fellow Fungi Perfecti teammates, including Paul himself!

As an accompaniment to the book, you can also visit for more information and future species updates.