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24-05-2020 00:52

DirkW DirkW

Salut a tous!Anybody out there, who made experienc

23-05-2020 21:03

Elisabeth Stöckli

Bonsoir, Trouvé sur branche morte aérienne d'un

24-05-2020 11:31

Camille Mertens

Bonjour à tous.Sur branche (alnus?), en bordure d

25-05-2020 10:17

Joop van der Lee

Because some of us do think that T. minuta is a st

24-05-2020 22:36

Joop van der Lee

The reason why I post all these different characte

24-05-2020 17:54

Juuso Äikäs

I visited a small swamp and found these growing on

24-05-2020 19:31

Robin Isaksson Robin Isaksson

peritheciawall does not react in koh. Spores 22-2

24-05-2020 13:55

Thorben Hülsewig

Hi there, at the beginning of May I found this Py

24-05-2020 13:09

Enrique Rubio Enrique Rubio

Hi to everybodyThese superficial globulose or barr

24-05-2020 10:38

Lothar Krieglsteiner Lothar Krieglsteiner

... found in Northern Germany (Brandenburg, Schorf

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Cosmospora sp
Christian Lechat, 13-06-2008 08:16
Christian LechatI would like to know your opinion about a collection of Cosmospora on 03.05.2008 in French Guiana, Saül, Sentier des Gros Arbres, on rotting bark, mixed with Neonectria jungneri, Haematonectria cf. haematococca, Cosmospora chaetopsinae-polyblastiae, Ophionectria trichospora, Viridispora alata and Bionectria sp.
There are several genera on this bark and it's difficult to study.
Only very minute ascomata of Cosmospora are isolated.

Cosmospora sp.:
Ascomata non stromatic,160-200µm hight and 100-130µm wide, red orange transluscent, asci and ascospores are visible through the wall. It’s difficult to make a section of perithecial wall but I was able to make one rather correct to measure it.
Perithecial wall 10-12µm wide made of a simple region of ellipsoid or elongate cells thick walled, asci clavate 55-70 x 12-14µm, ascospores 9,5-11 x 4,5-5µm, dark brown, becoming purple in KOH, striate.
Maybe have you an idea?
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