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06-01-2018 20:08

M Jonathan M Jonathan

Bonjours, j'espère que quelqu'un peut m'aider ave

12-01-2018 23:43

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Un ami me confie cette r

12-01-2018 20:56

Vasileios Kaounas Vasileios Kaounas

Found in 08-01-18, in in a rotten section of Aspho

10-01-2018 14:54

Gernot Friebes

Hi,a few days ago I collected a corticated branch

09-01-2018 21:08

Claude Kaufholtz-Couture Claude Kaufholtz-Couture

Bonsoir à vous tous ! Je repasse, dans la clé d

08-01-2018 12:22

Elisabeth Stöckli

Bonjour, Trouvé sur racine d'épicea (Forêts de

10-01-2018 12:55

Manak Roman

Hello everyone,I found small fungus three days ago

07-01-2018 22:47

Per Vetlesen

Grown in moist chamber on bark/resin of fallen Pin

08-01-2018 16:14

Pascal RIBOLLET

Bonjour,Je suis en train de travailler sur Ascobol

05-01-2018 20:40

Chris Yeates Chris Yeates

Bonsoir tousI expected this collection to be a str

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Thyronectria chrysogramma?
M Jonathan, 28-12-2015 05:24
M Jonathan
Collected 24 december 2015, on Ulmus americanus bark in Ottawa ontario.

the Perithecia show stricking yellowish coloration.


The asci seem to be bitunicate, do not react in melzer and bear 8 spores, the spore measure 28-31u*10-12. The spores contain several (up to 9-10) horizontal septum and 1-2(3?) vertical septum.


Seem to be promising for T chrysogramma, however I can't find pictures to compare.

I have the specimens in case anyone is interested in them

Regards

Jonathan M

https://c2.staticflickr.com/6/5778/23721004260_c0e180c662_b.jpg

Gernot Friebes, 28-12-2015 09:07
Re : Thyronectria chrysogramma?
Hi Jonathan,

here is a paper by Jaklitsch & Voglmayr which includes photos of T. chrysogramma as well as further literature on that species and a key to the genus: tps://www.researchgate.net/publication/270283146_Persistent_hamathecial_threads_in_the_Nectriaceae_Hypocreales_Thyronectria_revisited_and_re-instated

Best wishes,
Gernot
M Jonathan, 28-12-2015 18:55
M Jonathan
Re : Thyronectria chrysogramma?
Thank you, I lookedat that paper and somehow missed those pictures, The ressemblance are striking, I think it is the good identification, even if my specimens are not in groups like those species tend to be.