Hello Mattias,

So far, it is likely that the information present in the literature is not so helpful since there are different opinions in this regard. However, given that Cortinarius rubellus is extreamly toxic I would say (also based on the paper you posted) that also C. Gentilis could contain orellanin (probably at much lower level than in C. rubellus)

Best

JR

Hello Matthias,

On the german page toxinfo.org two articles are cited which prove orellanin in C. gentilis:

Spoerke DG; Rumak BH: Handbook of mushroompoisoning. CRC Press 1994

Rumack BH; Toll LC; Gelman CR: Mushroom-Orellan; Micromedex, Inc., Englewood, Colorado 30.9.99

source: http://www.toxinfo.org/pilz/db/frameset.php?genic=ORELLANUS-SYNDROM

Chers, Sebastian

A screening of C. orellanus, C. rubellus, C. gentilis, C. cinnamomeus, C. malicorius, C. phoeniceus and C. sanguineus by a chemical test (https://www.researchgate.net/post/What_are_methods_to_identify_between_edible_and_non-edible_mushroom#546a6d68cf57d7c83e8b459b) showed only C. orellanus and C. rubellus to contain orellanine.

Hello,

a finnish vet  Eeva-Liisa Hintikka did a toxicological sudy on C. gentilis, and it is not at all toxic. This is not surprising, as the species belongs to subgenus Telamonia, and C. rubellus belongs to subgenus Cortinarius - they are only remotely related.

I was not able to find the actual study, but this is widely known by all Finnish mycologists.

That is what I suspected, but it is difficult to kill the rumors. I would appreciate if you could find that study.

And what about C. limonius, still a Cortinarius an suspected toxic?

I think this is her ResearchGate page 

https://www.researchgate.net/profile/Eeva-Liisa_Hintikka

Maybe you would like to ask it for yourself , and ask about the other species as well. As far as I know, limonius is not toxic, although it belongs to the same section than rubellus.

oh, and also - that original study was showed to be flawed, as the original material still existed, and it contained both species - gentilis and rubellus. So the toxin came from rubellus, not from gentilis. A good example why we need people who know their species ;)

A recent study interestingly found that Cortinarius armillatus contained low amounts of orellanin, less than 1% of the toxic species. Cortinarius armillatus have been considered as an edible species. https://www.researchgate.net/publication/295673249_A_novel_orellanine_containing_mushroom_Cortinarius_armillatus

Article A novel orellanine containing mushroom Cortinarius armillatus