Observation 90741: Melanoleuca stridula (Fr.) Singer

In the last picture there is another Melanoleuca which I believe to be M. graminicola ss.str. …

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It’s a mess
By: Dimitar Bojantchev (dimitar)
2012-03-24 09:06:33 CET (+0100)

Melanoleuca, like Clitocybe stand out as some of the messiest genera. I will wait for technology to advance until we are able to sequence all type collections (whatever is available, of course) in order to develop a solid foundation. All of the literature that I have on Melaneleuca does well on species level descriptions, but none can handle the overall nomenclature. It’s a mess.


Vesterholt I used for Hebeloma
By: Gerhard Koller (Gerhard)
2012-03-23 22:28:56 CET (+0100)

but since I gave up on them.
Hm, I would rather believe the opposite that there are too many names in Melanoleuca but I may err. I have not that much experience in this genus. The only thing that is certain is that in many collections it is almost impossible to tell by the eye, ecology, phenology or (haha) sometimes even microscopically.

Hebeloma, Melanoleuca, Entoloma, Conocybe, Psathyrella are the worst I can think of now.

I have
By: Irene Andersson (irenea)
2012-03-23 22:25:31 CET (+0100)

Jan Vesterholts key in danish from “Svampe”, but there are only 14 species in it, and the ones without cystidia is only represented by melaleuca there.
M. graminicola, brachyspora, robertiana, stridula, vulgaris are other names of species without cystidia, and several undescribed species are still beleived to be hidden in that group…

That is exactly the point
By: Gerhard Koller (Gerhard)
2012-03-23 19:36:51 CET (+0100)

There is not really a good monography, you have to use at least two different authors dealing with this difficult genus to come to a sort of conclusion. I use Groeger and Boekhout and still it is not really satisfying. One of the main problems is different name interpretations and the key options with/without cystidia for cystidia can be present or absent or just one in thousand. And then you are in a complete wrong direction. Also the color changes are not constant. I am very cautious in naming Melanoleuca or in even trying to ID them. I have so many collections from earlier years that I am sure are misapplied ID’s.

By: Irene Andersson (irenea)
2012-03-23 19:29:36 CET (+0100)

Do you happen to have a proper Melanoleuca key?
For me, it seems like there are several species that key out as stridula..
(well, at least two – not arguing against this one)

Created: 2012-03-23 18:14:46 CET (+0100)
Last modified: 2012-03-23 18:14:49 CET (+0100)
Viewed: 179 times, last viewed: 2017-06-17 23:39:26 CEST (+0200)
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