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24-03-2026 15:44

Åge Oterhals

I hope someone can confirm the name of this collec

25-03-2026 15:06

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me confirm

25-03-2026 10:35

Hulda Caroline Holte

Hello,I collected this species growing on a dead b

25-03-2026 13:54

Enrique Rubio Enrique Rubio

Does anyone know where I could download Paoletti's

25-03-2026 15:46

Michel Hairaud Michel Hairaud

Bonjour, Je sollicite de l'aide pour cette récol

24-03-2026 19:59

William Slosse William Slosse

Hello everyone,On 23/03/26, I found the following

21-03-2026 15:13

Lepista Zacarias

Hello everyone, Does any one know of any literatu

24-03-2026 21:37

Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

24-03-2026 21:07

Ethan Crenson

Hello all, A friend collected this asco in a wood

23-03-2026 20:16

Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningI'm unable to identify this Coprotus o

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Helminthosphaeria on Skeletocutis carneogrisea
Björn Wergen, 13-11-2015 18:47
Björn WergenHi friends,

I have collected Skeletocutis carneogrisea and fortunately I decided to collect old fruitbodies too, from which I believed to find ascos.

And as always, I really found something: very small (0,4mm) hairy perithecia growing on the pore surface, with spores around 5,6-7,2x3-4µm and asci 50-65x6-7µm, with 8 spores and unitunicate. Hairs about 70-100µm long, septate and typically "lasiosphaerioid" (not black and not so stiff like hairs of Coniochaeta etc.).

Any ideas about a Helminthosphaeria species growing on polypores with these small spores?

regards,
björn
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Jacques Fournier, 13-11-2015 19:57
Jacques Fournier
Re : Helminthosphaeria on Skeletocutis carneogrisea
Hi Bjorn,
if I were you I would not rule out Coniochaeta so easily. Did you check the presence of germ slits on ascospores?
Cheers,
Jacques
Björn Wergen, 13-11-2015 20:45
Björn Wergen
Re : Helminthosphaeria on Skeletocutis carneogrisea
Hi Jacques,

yes, I did, but I could not find any. I will nevertheless check species of this genus. Thanks for the hint ;)

arr ok, Coniochaeta kellermanii. But I do not know this species to grow on pores of Skeletocutis. Enrique has worked on it a time ago, maybe he can tell us what he thinks.

regards,
björn