11-04-2017 19:03
Lepista ZacariasDear all,This pyreno was growing on the dead wood
10-04-2017 09:56
François BartholomeeusenDear forum members,On a beetle (Carabus problemati
10-04-2017 17:12
Bernard Declercq
Hi to all,Collected last week on bark of Rhamnus f
08-04-2017 10:15
Bernard CLESSE
Sur l'écoulement séché de résine d'un épicéa
08-04-2017 09:08
Bernard CLESSE
Bonjour à tous,Hier, j'ai récolté sous pin sylv
06-04-2017 22:29
Amadej Trnkoczy
Hi to everyone,I found this small (probably) asco
Pyreno on Myoporum
Lepista Zacarias,
11-04-2017 19:03
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
Jacques Fournier,
11-04-2017 19:23
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
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
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
Re : Pyreno on Myoporum
yes you are right, it occurs in salted environment.
The pdf is on its way.
Cheers,
Jacques
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
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.)
Jacques Fournier,
12-04-2017 16:44
Re : Pyreno on Myoporum
great!
Jacques
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
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
