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01-02-2026 19:29

Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

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éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

29-08-2025 05:16

Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

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Arnold Büschlen

Bryocentria brongniartii und B. metzgeriae mit ihr

21-01-2026 16:32

Gernot Friebes

Hi,I need your help with some black dots on a lich

07-12-2015 14:17

Zugna Marino Zugna Marino

Buon giorno a tutti, ad un primo momento, non ess

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Jean-Paul Priou Jean-Paul Priou

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Pablo Chacón Pablo Chacón

Bonne nuit, Voir si vous m'avez élaguée appor

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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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