Coprinopsis - but which one?

[SheffieldLass]

Originally Posted by mollisia

Hello Melanie,

this is an interesting finding of an intersting group of Coprinus. You are for sure in section Narcotici. From this section I have seen cinereofloccosus, laanii, martinii, narcoticus and saccharomyces. The species I have not seen are - besides C. trisporus - all dung inhabiting species.
I'm not sure whether the concept of ULJÉ really comprises all what one can find in nature, but may be there are still one or two undescribed species in this group.
Your collection may be one of it, because I'm not convinced of C. semitalis. If you take the key of ULJÉ, you finally end with this species. But C. semitalis (as I understand the species) should have the most prominent myxosporum of all in the group. As far as I can see on you pictures, the myxosporium there is not too broad, compared with what I have determined C. semitalis:


So may be worth checking if all other characters fit perfect, or if may be there are still other things that contradict a determination as C. semitalis.

best regards,
Andreas

I found some more of this Coprinopsis on May 10th, very similar habitat, next valley along. They certainly match the first, and I got to examine them microscopically before they had half distintegrated, so have better details.


I checked 3 specimens, and the following are slightly different to the details of C semitalis:

The myxosporium is consistently comparatively thin on them all, and smooth.

(This also shows nicely four spores in one myxosporium that Chris mentioned. There were quite a few in one specimen only).

The veil connecting hyphae have frequent clamps, quite clear. And veil cells were up to 115um dia, which is quite a bit bigger than the up to 70um mentioned in FAN.


The spines show up well on these ones.

Do all the Coprinopsis have this type of gill structure, with the basidia neatly surrounded by pseudoparapyses? It is so easy to see how many spores there are per basidium.



Melanie