Observation 172866: Cortinarius (Pers.) Gray

When: 2014-08-03

Collection location: St. Mihiel Woods East, Tinley Park, Illinois, USA [Click for map]

Who: Rocky Houghtby

Specimen available

cf. C. simulans.

Slightly nauseous odor. Beneath hardwood.


Proposed Names

-2% (2)
Recognized by sight: chestnut pileus, sub-lilac lamellae and bulbous base
Used references: Kaufmann
Based on microscopic features: Spore size and shape
Based on chemical features: negative to KOH
7% (2)
Used references: M. Moser. 1978. Keys to Agarics and Boleti.
55% (1)
Recognized by sight: not sure what this is, but I believe that it is too squat for C. anomalous (see other examples on MO). Gill color wrong for bivelus. Nice documentation, Rocky.

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= Observer’s choice
= Current consensus


Add Comment
Good find!
By: Emma Harrower (eharrower)
2014-08-12 05:36:52 AEST (+1000)

For the Cortinarius anomalus group see http://mushroomobserver.org/173331?q=281pE and http://mushroomobserver.org/97976?q=282Xb. These are much more slender and much more blue/grey. The spores are subglobose and yours are elliptical. To find out what species this was, I was digging around the subgenus Seriocybe. Telamonias are hard to identify.

What’s up
By: Rocky Houghtby
2014-08-12 02:37:41 AEST (+1000)

With the exceptionally confident vote? The spores are at the very least slightly out of range and the lamellae were lilac when collected ( sorry if that’s not clear from the picture). I am not familiar with these, or any other taxa in Cortinarius so I hesitate to disagree strongly, but I don’t think the morphology matches well with your suggestion. Additionally, we are too far south for Birch and there is no Pine to speak of in my region. The predominant trees were Ash, Cherry, Locust, Sumac and Oak.

Thanks for the suggestion!