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30-04-2015 09:30

Alex Akulov Alex Akulov

Dear friendsAmong the old samples, which are store

30-04-2015 12:00

Katarina Pastircakova

Hi there, Does anyone have these papers? Bagyana

29-04-2015 15:42

Leandro Sánchez Leandro Sánchez

Sur Abies, diamètre max 1mmSpores  16,20-18,60 /

28-04-2015 21:58

Jenny Seawright Jenny Seawright

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29-04-2015 11:36

Jean-Louis JALLA Jean-Louis JALLA

Bonjour à tous.Je sollicite votre aide pour ce pe

28-04-2015 20:35

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

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28-04-2015 00:14

Andrew N. Miller Andrew N. Miller

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24-04-2015 14:49

Savic Dragisa

I found it on Galium mollugo, about 1mm tall, does

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Steve Clements

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En madera sin determinar A ver si hay alguna suge

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Pyrenomycete from Caragana arborescens twings
Alex Akulov, 30-04-2015 09:30
Alex AkulovDear friends
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

  • message #35480
  • message #35480
Lothar Krieglsteiner, 30-04-2015 15:05
Lothar Krieglsteiner
Re : Pyrenomycete from Caragana arborescens twings

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

Alex Akulov, 30-04-2015 15:50
Alex Akulov
Re : Pyrenomycete from Caragana arborescens twings
Thank you, Lothar
This is really Thyronectria representative with presence of paraphyses in hamathecium.
New article about this genus is in the attached file.

Alex
Lothar Krieglsteiner, 30-04-2015 16:00
Lothar Krieglsteiner
Re : Pyrenomycete from Caragana arborescens twings

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

Lothar Krieglsteiner, 30-04-2015 16:00
Lothar Krieglsteiner
Re : Pyrenomycete from Caragana arborescens twings

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