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28-12-2015 05:24

M Jonathan M Jonathan

Collected 24 december 2015, on Ulmus americanus ba

28-12-2015 10:39

Joop van der Lee Joop van der Lee

Found on cow dung.Apothecia: 2.67 mm in diameter;

27-12-2015 14:04

Bernard CLESSE Bernard CLESSE

Bonjour à tous,Voici un Hypocrea venant sur branc

26-12-2015 13:08

Nina Filippova

Dear colleagues,I would appreciate your help in fi

27-12-2015 16:40

Cvenkel Miran

photoIn beetween oak log & ground. From far it

27-12-2015 11:18

Bernard CLESSE Bernard CLESSE

Bonjour à tous, Le 23/12, j'ai trouvé ce que je

25-12-2015 20:55

Gernot Friebes

Hi,in September I found this earth tongue in Liech

21-12-2015 05:00

M Jonathan M Jonathan

a all white scutellinia producing long hair with m

24-12-2015 23:34

Alan Rockefeller Alan Rockefeller

Found on conifer wood in Atemajac de Brizuela, Ja

23-12-2015 23:48

ACAR ismail ACAR ismail

Hi all on remains of burnt wood and soil asci 11

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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.