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me mandas el material seco de Galicia (España) re

03-07-2025 20:08

I found this interesting yellowish asco growing on

28-06-2025 16:00
Hello.A tiny fungus shaped like globose black grai

20-06-2025 08:33
Hello.Small, blackish, mucronated surface grains s

01-07-2025 23:37
Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26
Yanick BOULANGERBonjourRécolté sur une brindille au fond d'un fo

02-07-2025 18:45
Elisabeth StöckliBonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56
Lydia KoelmansPlease can anyone tell me the species name of the

30-06-2025 12:09

This tiny, rather "rough" erumpent asco was found

Among the old samples, which are stored in our mycological collection, I found one that was signed as Nectria decora. It is not N. decora a 100% and even non Nectriaceae representative, because presence of many threadlike, branched, septate paraphyses (pseudoparaphyses) in hamathecium.
Perithecia (pseudothecia) erupt in dense groups from the bark of thin dry twigs of Caranana arorescens. Externally perithecia looks olive-brown, but in a cross section the wall is clearly red-brown. The walls of fruiting are very thick. Asci are 67,3-83,6 x 14,2-15,8. Ascospores are arranged in two rows or obliquely, in some cases biseriate in the upper part and uniseriate below. Ascospores hyaline, muriform (with 7-8 transverse and multiple longitudinal and oblique septae), slightly constricted near the central septum, 16,3-21,5 x 4,7-7,6.
Alone I can not reidentify this sample.
If you have some ideas about it, I would greatly appreciate for your help.
Alex

Hello Alex,
this sample has transversely septate spores. So - I first would look in the genus Thyronectria. Maybe there ist a species on Caragana?
Regards from Lothar

This is really Thyronectria representative with presence of paraphyses in hamathecium.
New article about this genus is in the attached file.
Alex

thank you for the paper! - very interesting, I did not have it yet.
Maybe you can find a species there - or not?
Regards from Lothar

thank you for the paper! - very interesting, I did not have it yet.
Maybe you can find a species there - or not?
Regards from Lothar