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24-05-2010 23:34

M. M. Gotink

I found this one today on hare dung which I keep i

24-05-2010 10:14

Marja Pennanen

Hello, once again I have great difficulties to ge

23-05-2010 21:30

Hans-Otto Baral Hans-Otto Baral

In Arcon, le Gué de la Chaux, on attached Pinus s

23-05-2010 21:20

Martin Bemmann Martin Bemmann

Dear all, I am currently in the northern mounta

23-05-2010 18:37

Javier Ormad

Connues sont les difficultés à déterminer les m

20-05-2010 21:44

Gilbert MOYNE

Voici un petit Ciboria (je pense) récolté ce jou

20-05-2010 08:42

Marja Pennanen

Hello, these are about 0,3-0,7 mm wide and seems

20-05-2010 08:37

Jacques Fournier Jacques Fournier

Bonjour à tous, quelqu'un pourrait il me procure

18-05-2010 18:35

Roland Labbé

Bonjour ! Voici une planche de ce que nous croy

17-05-2010 20:22

Jean Pierre Dechaume Jean Pierre Dechaume

Dans une plantation de tuyas... à 800m d'altitude

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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.
  • message #76442
  • message #76442
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
  • message #76479
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.
  • message #76480
  • message #76480