Observation 83891: Cortinarius delibutus Fr.

When: 2011-11-06

Collection location: Thoiry, France [Click for map]

Who: Douglas Smith (douglas)

Specimen available

Found under spruce, fir.

Cap light tan, stipe off-white, gills lilac to light brown. Stipe and cap viscid. Taste mild.

The micro-shot is of spores from the veil at 1000x in KOH. The spores are sub-globose, warted and brown. The apr. size is 8 × 7 um.

This all matches rather well with the desc. for Cortinarius delibutus in Funga Nordica p676.

Proposed Names

66% (4)
Eye3 Eyes3
Recognized by sight
Used references: Funga Nordica
Based on microscopic features
-6% (2)
Recognized by sight: Blue colour on cap (or veil) to start with (soon fading to olivaceous ochre or pale yellowish), doesn’t fit delibutus.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Irene Andersson (irenea)
2011-12-07 04:36:36 MST (-0700)

Section Delibuti, yes,
but it’s quite obvious that delibutus (as species!) is interpreted in several different ways (same thing with salor btw):

Too bad there are no pictures or descriptions of each collection..

I think you know, Dimi, as well as I, that you need to see all stages of mushrooms in this group, to be able to describe the colours of cap and veil, because they change more or less with age. Some of the blue ones fade and turn rapidly olivaceous or yellowish/ochraceous.

C.delibutus gr.
By: Dimitar Bojantchev (dimitar)
2011-12-07 01:09:44 MST (-0700)

Irene, not sure what C. transiens is exactly, but I can’t see it here. Reading through Soop’s description of C. transiens, I can’t see it in this very typical C. delibutus gr. collection.

C. transiens states: “Cap… violet to greyish-lilac with an olive-grey to tan centre, later fading to yellow brown…” This is not the mushroom that Doug has photographed.

As I mentioned on MushroomTalk, Doug’s collection matches exactly my material from Bulgaria, which is a separate species (98% similarity index to the Tubingen C. delibutus), but a close relative nevertheless. Thus I suggest C. delibutus gr. as the correct name for this observation.



Created: 2011-12-01 16:00:03 MST (-0700)
Last modified: 2011-12-07 01:12:07 MST (-0700)
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