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20-02-2026 18:47

Marc Detollenaere Marc Detollenaere

Hello Forum,On rotten wood of Fagus, I found some

07-02-2023 22:28

Ethan Crenson

Hello friends, On Sunday, in the southern part of

19-02-2026 17:49

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

19-02-2026 13:50

Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

19-02-2026 12:01

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España), recole

17-02-2026 09:41

Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

16-02-2026 21:25

Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

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Pyreno on Equisetum
Enrique Rubio, 25-06-2023 13:10
Enrique RubioDo you have some idea that help me with this non-stromatic pseudotecia up to 0.2 mm in diam. inmersed on stems of an Equisetum species? The ascospores are hyaline at first, but pale brownish with age, with the lower cell narrower than the upper one.
Many thanks in advance.
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Bernard Declercq, 25-06-2023 15:26
Bernard Declercq
Re : Pyreno on Equisetum
Hi Rubio,

Does those spores have a sheath? If so, this is perhaps Lophiostoma amphibium (Magnes & Hafellner) Aptroot & K.D. Hyde.

Regards,

Bernard
Enrique Rubio, 25-06-2023 17:41
Enrique Rubio
Re : Pyreno on Equisetum
Thank you, Bernard
I can't find any information on this taxon, would you happen to have any?
Viktorie Halasu, 25-06-2023 21:58
Viktorie Halasu
Re : Pyreno on Equisetum
Hello,

the orig. description is here: https://www.researchgate.net/publication/283923700_Ascomyceten_auf_Gefasspflanzen_an_Ufern_von_Gebirgsseen_in_den_Ostalpen

The new combination was published in this chapter, but I haven't been able to find either the chapter nor the whole book. https://fungi.myspecies.info/content/marine-and-estuarine-species-lophiostoma-and-massarina

Viktorie
Enrique Rubio, 26-06-2023 10:53
Enrique Rubio
Re : Pyreno on Equisetum
I would like to thank you once again for your prompt and comprehensive help, Viktorie.
And also to Bernard, although having read the description of Massarina amphibia, I don't think it can be this species with hyaline spores surrounded by a compact gelatinous sheath.
Chris Yeates, 29-06-2023 00:27
Chris Yeates
Re : Pyreno on Equisetum
The size of the spores is larger but this looks very like the image here. I got the name from Holm & Holm "Nordic equiseticolous Pyrenomycetes". They give "Spores sub- fusiform, (12-)16-18 x 4-5 µm" . . .

Best wishes

Chris
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Enrique Rubio, 29-06-2023 10:45
Enrique Rubio
Re : Pyreno on Equisetum
Dear Chris.
I had considered that possibility, but the spores of that Didymella are described as hyaline and not brunnescent as in my collection. And the host, although this is quite irrelevant, was not Equisetum silvaticum but E. telmateia.
Finally, I think this collection could be close to Scheuer's concept of Massarina pusillispora, although Massarina is also a genus with hyaline spores. These genera are really complex.
Anyway thank you very much for your opinion.
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