Observation 51481: Cortinarius talus Fr.
When: 2010-08-12
Herbarium specimen reported

Notes: Another Colorado Cortinarius which seems to lack a name.
The cap appeared dry, somewhat virgated, and up to 7.8 cm across.
KOH on the cap gave a slight red brown color.
KOH on the other surfaces was neg.
The spores were ~ 8.4-9.2 X 5.1-6.1 microns. They were relatively smooth and many displayed an oil droplet(in KOH).
I changed the proposed name to Cortinarius talus based on the suggestion from Dimitar and the similarity to at least the western NA version of the European species.

Proposed Names

57% (1)
Eye3 Eyes3
Used references: Mushroom Hobby website
Mushrooms of the Pacific Northwest by Trudell & Ammirati

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Close to the Western American version of Cortinarius talus…
By: Dimitar Bojantchev (dimitar)
2010-08-28 12:54:58 CEST (+0200)

Ron, great observation — this one comes closer to the vicinity of Cortinarius talus, the way we interpret it in the American West. I had one sequence, which was not very good for a confident judgment, but it still indicated closeness to the European material. I will get a better one eventually.

Here is a similar collection from California.

Mushroomhobby.com link


Created: 2010-08-28 01:32:05 CEST (+0200)
Last modified: 2010-08-28 19:10:26 CEST (+0200)
Viewed: 93 times, last viewed: 2017-06-08 05:17:47 CEST (+0200)
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