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12-03-2016 12:43

Maren Kamke Maren Kamke

Hi everybody,I found a few perithecia (diameter 0,

15-03-2016 20:53

Per Vetlesen

Hi everybody It grew on a dead decorticated branc

09-03-2016 21:51

Bernard CLESSE Bernard CLESSE

Bonsoir à tous,Voici ce que je pense à nouveau Ã

15-03-2016 15:57

Angel Pintos Angel Pintos

anamorph in euonybus pulchellus

15-03-2016 17:57

Jean-Louis JALLA Jean-Louis JALLA

Bonjour. La SMAM (Société Mycologique André Ma

14-03-2016 21:09

François Bartholomeeusen

Hi everyone,On an old Rubus stem I found one apoth

15-03-2016 15:47

Angel Pintos Angel Pintos

tar spot produced by serenomyces sp.

15-03-2016 09:21

Jacky Launoy

Bonjour, je cherche une description de Podosordar

14-03-2016 11:58

Garcia Susana

Hi, I found this ascomycete growing in sheet of P

10-03-2016 15:16

Castillo Joseba Castillo Joseba

me mandan esta especie desde Galicia "lamina fina

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Pyrenomycete with hyaline thickwalled hairs
Maren Kamke, 12-03-2016 12:43
Maren KamkeHi everybody,
I found a few perithecia (diameter 0,35 mm) on Sambucus nigra without bark. Spores, hyaline, big 34-46 x 7,5-10,1 µm, becoming 1-septate. Hairs thickwalled (up to 365 µm long and 11 µm wide) with refractive walls. Asci 115-130 x 12-20 µm, IKL negative.
I thought first of an Echinosphaeria sp., but I understand that this genus has brown setae. Maybe a Trichosphaeria?
Regards, Maren
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Maren Kamke, 13-03-2016 13:30
Maren Kamke
Re : Pyrenomycete with hyaline thickwalled hairs
Hi again,
I found some immature perethecia on another stick. There are accompanying conidia.
Regards, Maren
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Jacques Fournier, 15-03-2016 15:17
Jacques Fournier
Re : Pyrenomycete with hyaline thickwalled hairs
Hi Maren,
I think your fungus is related to the Helminthosphaeria stuppea complex (se Miller et al., 2014, Mycologia 106: 505-524), but ascospore size does not fit.
Could you check under the stereomicroscope if the ostiole is surrounded by 3-4 tubercles, as in typical H. stuppea?
Cheers,

Jacques
Maren Kamke, 15-03-2016 22:46
Maren Kamke
Re : Pyrenomycete with hyaline thickwalled hairs
Thank you Jacques,
I checked on tubercles, but there are none. I think it is indeed a species related to Helminthosphaeria stuppea. Maybe it's the same Europaean species which has been discussed many times here under the name Lasiosphaeria stuppea.
http://www.ascofrance.fr/search_forum/40144
http://www.ascofrance.fr/search_forum/14026
http://www.ascofrance.fr/search_forum/37289

Regards, Maren