When: 2005-11-16

Collection location: Marble Mountains, California, USA [Click for map]

Who: Darvin DeShazer (darv)

Specimen available

Collected in the Marble Mountains and displayed at the 2005 Humboldt Bay Mycological Society Fair in Eureka and the 2006 SOMA Camp in Occidental, CA.
Known to the Greeks as Agarick, this conk is well known for its medicinal properties. The quinine conk contains “agaricin”, which is produced synthetically today by the pharmaceutical companies. The second photo shows a hole on the right side of the pores where a plug was removed. Living tissue was plated on agar and once grown, sent to DOE Homeland Security for possible antiterrorism properties. Paul Stamets claims a match was made and this fungus produces a chemical that inhibits small pox. Anti-viral compounds are very rare!

[admin – Sat Aug 14 02:02:40 +0000 2010]: Changed location name from ‘Marble Mountains, CA’ to ‘Marble Mountains, California, USA’

Species Lists


Each line is an annual ring. Counting them makes this conk about 32 years old.

Proposed Names

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus


Add Comment
By: Chaelthomas (Chaelthomas)
2017-06-09 06:27:13 MDT (-0600)

Indeed it is different from fomitopsis. Nice job Darv!
Right now i have 16-17 collections and tissue samples on que for getting sequenced when time and money allows. To date i have 42 signtings since febuary within a 40 mile radius from portland starting in forest park to battle ground to larch mountain.

I’m going with IF…
By: Debbie Viess (amanitarita)
2011-12-18 19:45:58 MST (-0700)

until proved otherwise.

Not sure which name I prefer
By: Nathan Wilson (nathan)
2011-12-18 18:56:57 MST (-0700)

IF and MycoBank both keep this in Fomitopsis and Tom chose to approve that opinion on Mushroom Observer. For myself this species looks pretty distinct and if there is compelling DNA evidence that would sway me. However, I have yet to see reference to such work.