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11-05-2026 12:32

Bernard CLESSE Bernard CLESSE

Pourriez-vous m'aider à identifier cette héloti

13-05-2026 15:26

François Freléchoux François Freléchoux

Bonjour,Voici une récolte faite il y a quelques j

12-05-2026 15:41

Nicolas VAN VOOREN Nicolas VAN VOOREN

Dear Ascolovers, especially interested in Pezizale

13-05-2026 12:05

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'aimerais avoir confirmation de c

10-05-2026 23:17

Andreas Gminder Andreas Gminder

Hello,today we found in a moist steep decidous for

28-04-2026 20:07

Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

27-04-2026 20:52

Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

11-05-2026 20:22

Lothar Krieglsteiner Lothar Krieglsteiner

on attached twig of standing Ficus caricaquite uns

11-05-2026 13:22

Sylvie Le Goff

BonjourPuis avoir votre avis sur cet ascome, je vo

29-04-2026 10:44

Lothar Krieglsteiner Lothar Krieglsteiner

growing at moist, drying-out soil at the side of a

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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.