Asco on Cardboard - Forum ASCOFrance

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Asco on Cardboard

Malcolm Greaves, 23-06-2017 17:53

This bright orange asco was on some rotting cardboard around a compost bin.
The spores are not mature yet so the size of the very few I could find are 13.5 x 7.5 but that could change if I can get them to maturity.
Is there enough information to give a (tentative) id.
Thanks
Mal

Till Lohmeyer, 23-06-2017 19:52

Re : Asco on Cardboard

Hi, Malcolm -

an idea would be, perhaps, Nectriella funicola (Berk. & Broome) Petch. I found this species in 1994 on wet cardboard in a rubbish-dump. According to R. Lowen's thesis (1991) Nectria charticola Fuckel and Nectria fibricola Plowright ("S. Yorkshire: near Cadeby, Melton Wood, on old cardboard") are synonyms. The spores, however, are considerably longer than those of your find - 19,7-24,6 x 7,4-10 um in my collection and 16-24 x 4-8 according to Lowen.

I'm certainly not familiar with new taxonomic developments - so much has happened in the Nectria-world in recent times.

Best regards from Bavaria
Till

Malcolm Greaves, 23-06-2017 21:37

Re : Asco on Cardboard

Thanks Till,
This was in North Yorkshie so not far away. I will try and get it to maturity and see if the details change.
Mal

Malcolm Greaves, 24-06-2017 21:43

Re : Asco on Cardboard

One or two are mature now and the spores are a little longer but not enough to suggest the Nectriella. They are also too wide (17 x 11ave)and look to have a granular surface. The paraphyses seem to have the colour in all but the top segment.
Not sure if this brings other groups to the fore.
Thanks
Mal

Christian Lechat, 25-06-2017 06:44

Re : Asco on Cardboard

Hi Malcom,
I think that your fungus is not Hypocreales. It would be useful to know if they are perithecia or apothecia.
Could you show dry material?

All the best,
Christian

Malcolm Greaves, 25-06-2017 11:10

Re : Asco on Cardboard

Christian
Definitely apothecia. I have attached more photos showing that and the globose cells of the excipulum.
Mal

Christian Lechat, 25-06-2017 12:52

Re : Asco on Cardboard

Ok Malcom, but I have no skill for discomycetes.
Cheers,
Christian

Malcolm Greaves, 25-06-2017 14:51

Re : Asco on Cardboard

Thanks anyway.
Mal

Uwe Lindemann, 25-06-2017 23:09

Re : Asco on Cardboard

Ascospores and paraphyses reminds me to Iodophanus carneus. But maybe I'm wrong. Did you test the reaction of the asci in IKI?
Best, Uwe

Malcolm Greaves, 26-06-2017 09:35

Re : Asco on Cardboard

The first photos were in Meltzers and I could see no reaction.
Mal

Peter Püwert, 26-06-2017 17:54

Re : Asco on Cardboard

I regard the species also as Iodophanus carneus. A reaction to Melzer is not to be expelled on the photos in my opinion, moreover, the reaction not always is there. The elements of the mushroom are also congophil, what is to be seen on the photos also. Perhaps all that can be judged better if is washed out after the addition of the chemicals with water.
Greetings Peter.

Malcolm Greaves, 27-06-2017 00:54

Re : Asco on Cardboard

Thanks for your thoughts Uwe and Peter. Iodophanus is not one I had thought of at all and although the apothecia looks to have a more prominent margin it does have some strong similarities microscopically.
Mal

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