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06-02-2015 00:08

Miguel Ãngel Ribes Miguel Ángel Ribes

Good night friendsOn Fagus sylvatica too we found

18-02-2015 12:05

Enrique Rubio Enrique Rubio

Hi to everybody These small (0.3-0.4 mm) orange p

18-02-2015 10:38

Enrique Rubio Enrique Rubio

Hi to all I need description of Melanospora (Spha

17-02-2015 11:50

Chris Johnson

Good morningThis was found a few days ago on pony

18-02-2015 02:26

BENSACI Oussama Ali

J'ai isolé cet Ascomycota sous sa forme sexuée

16-02-2015 21:27

Jenny Seawright Jenny Seawright

Hello all, Found on Gorse, Ulex europaeus but the

15-02-2015 14:36

Carmen Echavarri

Hi to allThis was found on unknowm wood (probably

14-02-2015 14:21

hannie wijers

Hella, I have another question.On a branch of har

13-02-2015 21:38

Malcolm  Greaves Malcolm Greaves

I came across this growing on and around some Podo

14-02-2015 21:00

Jenny Seawright Jenny Seawright

Hello all, This Coprotus appeared on rabbit dung a

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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