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31-08-2025 17:32

Michel Hairaud Michel Hairaud

Bonjour, Pas d'identité trouvée pour cette réc

31-08-2025 19:41

Enrique Rubio Enrique Rubio

Hi to someone.I need to download this issue of Sve

31-08-2025 14:34

Thomas Flammer

I have found a Rutstroemia on abt. 2000 m on Alnus

29-08-2025 19:04

Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

30-08-2025 18:29

Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

28-08-2025 17:24

Thomas Flammer

I know, that this is not the real topic of this fo

29-08-2025 05:16

Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

24-08-2025 21:59

Edmond POINTE Edmond POINTE

Bonsoir amis mycologues,Trouvé sur crottin de che

27-08-2025 12:02

Pavol Palo

Hello dear friendsI would like to ask for sharing

25-08-2025 17:37

François Freléchoux François Freléchoux

Bonjour,Nous avons trouvé samedi dernier à l'ét

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Pyreno on Myoporum
Lepista Zacarias, 11-04-2017 19:03
Dear all,
This pyreno was growing on the dead wood of a shrub (Myoporum) on the sand dunes close to the sea. I don't understand its features and need your help.
Thanks in advance,
zaca

Some data:
Spores: 1-septate, brown, ellipsoid with round ends, dimensions (mostly measured inside the asci):
(9.1) 9.6 - 11.7 (12.8) × (4.9) 5.3 - 6.1 (6.4) µm
Q = (1.4) 1.6 - 2.2 (2.4) ; N = 28
Me = 10.8 × 5.7 µm ; Qe = 1.9
Hymenium: I-
Ascus tip: I+ blue

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Jacques Fournier, 11-04-2017 19:23
Jacques Fournier
Re : Pyreno on Myoporum
Hi Zaca,
have a closer look at the spores, they are not septate. It is a Nemania, N. maritima (Xylariaceae).
If you manage to make a better preparation you will see that the spores have a short germ slit.
Cheers,
Jacques
Lepista Zacarias, 11-04-2017 20:16
Re : Pyreno on Myoporum
Merci, Jacques!
Firstly, I did not look closely at the spores; Right, they may look septate, but they are not; This was one of the points in doubt because with septate spores I could not go anywhere ...
Secondly, you should know this pyreno very well, since you could recognize it immediately, even with wrong accompanying data;
I looked at the topics in AscoFrance and found one by Henrique Rubio:
Http://ascofrance.com/forum/23616/nemania-maritima
where in 2013, he was able to identify the first specimen for Spain. So it's a rare species for sure.
I will look at it better in a new preparation, but as Henrique pointed out in his topic, the germ slit is difficult to observe.
Finally, can you send me a copy of the following document?
Ju Y.-M. & Rogers J. D. 2002. - The genus Nemania (Xylariaceae). New Hedwigia, 74 (1-2): 75-120
Are there any other useful references?
I do not know whether this is relevant or not, but the epithet "maritima" is certainly linked to sea influence, and my specimen was found on the sand dunes near the Atlantic Ocean.
My very best regards,
zaca
Jacques Fournier, 11-04-2017 22:31
Jacques Fournier
Re : Pyreno on Myoporum
yes you are right, it occurs in salted environment.
The pdf is on its way.
Cheers,
Jacques
Lepista Zacarias, 11-04-2017 22:36
Re : Pyreno on Myoporum
The pdf made its is way fast and arrived.
Thanks again, Jacques.
Best regards,
zaca
Lepista Zacarias, 11-04-2017 23:13
Re : Pyreno on Myoporum
I looked into my photos and discovered one where the germ slit can be observed (attached.)
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Jacques Fournier, 12-04-2017 16:44
Jacques Fournier
Re : Pyreno on Myoporum
great!
Jacques
Lepista Zacarias, 12-04-2017 17:03
Re : Pyreno on Myoporum
Merci, Jacques.
As promised I return to the microscopic observation to search for evidences of the germ slit. I found many, but again the preparation was not so good as it should. On the other hand, some slit to be observed demands to unfocus the spore and the result is a poor photo. Most of the germ slit are straight but other are curved. Anyhow I compile some of these photos and drop them into a larger one, that at the end I had to split because of the size of the file.
Regards,
zaca
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