14-07-2025 11:20
Michel Hairaud
Bonjour, Voici une espèce de (?) Hyaloscyphace
16-01-2023 21:31
Riet van Oosten
Hello, Nearby the find of Calycina claroflava on
14-07-2025 17:55
Yanick BOULANGERBonjourAutre dossier laissé en suspendJe viens de
14-07-2025 11:17
Yanick BOULANGERBonjourJ'ai un dossier Jackrogersella qui est rest
14-07-2025 15:52
Gernot FriebesHi,I wanted to share this collection on Rubus idae
14-07-2025 13:37
Gernot FriebesHi,do you think this collection could be R. ulmari
12-07-2025 16:45
Thierry Blondelle
Bonjour à tous,J'avais d'abord pensé à des stro
05-07-2025 12:38
Åge OterhalsI found this pyrenomycetous fungi in pine forest o
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
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
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
The pdf is on its way.
Cheers,
Jacques
Thanks again, Jacques.
Best regards,
zaca
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
