Observation 21371: Gyroporus castaneus (Bull.) Quél.

When: 2009-05-22

Collection location: Sebastopol, Sonoma Co., California, USA [Click for map]

Who: Darvin DeShazer (darv)

Specimen available

Growing under Oregon oak, live oak and hazel nut.

Proposed Names

73% (4)
Eye3 Eyes3
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
the spores are typical of the genus Gyroporus…
By: Debbie Viess (amanitarita)
2009-05-29 09:35:19 PDT (-0700)

which is, as you noted Doug, more typically an Eastern North American or European species. In “California Mushrooms, A Field Guide to the Boletes”, Thiers mentioned them as a rare but not unheard of find in Northern CA, with all of the earlier collections made by Dr. Walt Sundberg from one specific area in the Sacramento River Delta, under one specific tree (oak)! Other West Coast collections have been from OR and WA.

If you had Oregon oak among your tree associates in Sebastopol Darv, could this mushroom maybe also be an inadvertant transplant? Still, a cool find, and a good edible, but too rare at this point out West to sacrifice to the fry pan!

Thats a weird thing to see in Cali.
By: Douglas Smith (douglas)
2009-05-29 08:58:17 PDT (-0700)

I didn’t think these were seen in California. Those spore at least don’t look like your normal Bolete spores. What about other Boletiod genera in California, more common ones, are there any of those that have spores that look like that?

wow Darv, nice find!
By: Debbie Viess (amanitarita)
2009-05-28 19:33:32 PDT (-0700)

Created: 2009-05-28 18:43:54 PDT (-0700)
Last modified: 2018-01-03 07:40:29 PST (-0800)
Viewed: 129 times, last viewed: 2017-09-21 20:07:19 PDT (-0700)
Show Log