Observation 14570: Cortinarius ponderosus A.H. Sm.

When: 2008-11-23

Collection location: Marble Mountain Ranch, Siskiyou Co., California, USA [Click for map]

Who: John Harlan (harlanx6)

No specimen available

In soil under Douglas fir-tanoak-madrone canopy. Taste and aroma mild.



Proposed Names

-26% (2)
Recognized by sight
72% (2)
Recognized by sight
Used references: http://mushroomhobby.com/...

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
ponderosus was my first impression looking at the cap…
By: Debbie Viess (amanitarita)
2008-11-24 20:43:34 GMT (+0000)

…but I wasn’t sure; is there nothing else that looks like this one, barring having noted or not noted an odor, or seeing young material w/blueish gills, or actually having it in hand to determine its hardness?

Cortinarius ponderosus
By: Dimitar Bojantchev (dimitar)
2008-11-24 18:31:42 GMT (+0000)

These fruit in great numbers in the foothills. They are the largest Cortinarius in our area. Have a distinct briny odor — please take a note of that. Here are my analysis:


By: Debbie Viess (amanitarita)
2008-11-24 15:46:54 GMT (+0000)

You can just make out the tiny remnants of the fibrillose partial veil on the cap edge and stipe; also rusty brown spore-drop is shown on stipe. Mushroom ID forces you to be a detective, searching for clues…CSI-Mushrooms!

Don’t think Russula, probably not Lactarius.
By: Daniel B. Wheeler (Tuberale)
2008-11-24 08:25:25 GMT (+0000)

Did you get a spore-print? This looks awefully similar to Pacillus involutus, which is poisonous.

Created: 2008-11-24 06:16:25 GMT (+0000)
Last modified: 2008-11-24 06:16:25 GMT (+0000)
Viewed: 68 times, last viewed: 2017-06-05 11:12:50 BST (+0100)