When: 2008-11-16

Collection location: Tomales Bay State Park, Marin Co., California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

under coast live oak.


Proposed Names

29% (1)
Recognized by sight: context white, unchanging.
Based on chemical features: taste mild, odor faintly unpleasant.
46% (2)
Recognized by sight: Under oak, yellow cap, white stem, bulbous stem base

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= Observer’s choice
= Current consensus


Add Comment
BTW Alan….
By: Debbie Viess (amanitarita)
2011-09-28 19:08:11 BST (+0100)

thanks for digging up all of these old cort obsies.

I suspect this is the exact same individual (mycelium) as shown in my drawing…
By: Debbie Viess (amanitarita)
2011-09-28 18:12:33 BST (+0100)

in which case, it is indeed xanthodryophilus.

ID pending. it’s on the dryer, and going to Dimi this week.
By: Debbie Viess (amanitarita)
2008-11-18 01:31:27 GMT (+0000)

It was quite beautiful, and already dug up by the happy Russian group ahead of us, so I didn’t feel guilty taking the entire collection (less one broken, mature cap to continue dispersing spores).

By: Irene Andersson (irenea)
2008-11-17 18:28:42 GMT (+0000)

It looks exactly like a rare eouropean species, Cortinarius caesiocortinatus.
California is California, so I don’t expect this to be the same, but it grows here with Quercus too.

The very roughly ornamented, almost round spores of this species, separates it from all the others. It would be exciting to know if this one has that.

Other features are the vivid yellow cap colour (becoming more orange in the middle), a bluish cortina (that colour is soon fading), the plug-shaped stem base, and it’s said to have a malt-like smell.