Observation 68474: Cortinarius olivaceofuscus Kühner

When: 2010-09-22

Collection location: Gotland, Sweden [Click for map]

Who: Irene Andersson (irenea)

Specimen available

Growing in calcareous spruce forest

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There are many NA posts of…
By: Dave W (Dave W)
2013-03-25 14:25:11 AST (-0400)

C. croceus on this board. The macro traits seem a bit diverse. I have been posting mine as “C. croceus group.” I should preserve some of my collections, in case someone ends up wanting to study this.

Dave, that would be interesting
By: Irene Andersson (irenea)
2013-03-25 13:37:31 AST (-0400)

if you have the same or a close relative to this species which isn’t close to croceus. There’s still a lot of investigation to be done, even with this little group of species.

These remins me of…
By: Dave W (Dave W)
2013-03-25 13:04:59 AST (-0400)

what I commonly call “C. croceus” here in Pennsylvania, USA. This type occurs under conifers; very common under spruce.

By: Irene Andersson (irenea)
2013-03-25 07:30:38 AST (-0400)

Moser suspected that olivaceofuscus and his carpineti (not a valid name) could be the same, but I think that the results of the sequences so far, indicate that more species can be involved.
MO obs 8210 shows a gang growing with Corylus.

Is this
By: Gerhard Koller (Gerhard)
2013-03-25 07:15:50 AST (-0400)

what was called Dermocybe carpineti? Mycorrhizal with hornbeam and maybe oak and beech?
This I know from thermophilous oak-hornbeam forests from my vicinity fruiting during height of summer (June-September).
Are there more species involved???

By: Irene Andersson (irenea)
2013-03-25 04:20:13 AST (-0400)

not exactly the same after all..?

There’s a small difference in the sequences, and this was growing with Picea, the estonian collection with Tilia. And this is less green coloured than the ones I have seen in hazel stands. It’s also strange that it’s only a 95% match with the Tübingen collection in GenBank. Could be worth looking closer at more sequences of olivaceofuscus..

Right on
By: Dimitar Bojantchev (dimitar)
2013-03-24 18:32:19 AST (-0400)

Others have agreed with that name — not that it matters much, but I think it is indeed C. olivaceofuscus.


Created: 2011-06-01 03:31:10 AST (-0400)
Last modified: 2011-06-01 03:32:52 AST (-0400)
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