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20-03-2020 20:42

Botanical Latin
Chris Yeates Chris Yeates

Bonsoir tous Apologies if this has already been m

20-03-2020 18:01

Winter Cistella on Prunus padus
Marja Pennanen

Hello forum, I seldom find hyaloscyphaceae on Pru

20-03-2020 21:23

Literature request
Simon Kennedy

Can anyone provide a copy of the following: Keys

20-03-2020 11:43

Claussenomyces?
Marc Detollenaere Marc Detollenaere

Dear Forum, On the bark of Quercus, I found some

19-03-2020 18:53

Asco on Picea
Thorben Hülsewig

Hi there, Last Saturday I found this Asco on a br

20-03-2020 17:20

Platystomum compressum ????
Blasco Rafael Blasco Rafael

Hola, necesitaria confirmar si esta muestra es Pla

20-03-2020 11:49

Asco or Zygo?
Dragiša Savic

HiDoes anyone recognize this? It grew on a rabbit

19-03-2020 11:36

Helicogonium (?) on Olla transiens
Andgelo Mombert Andgelo Mombert

Bonjour, Sur Olla transiens. Ascospores : 6,5-8

19-03-2020 18:45

En herbacea en dunas
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia recolectado

19-03-2020 13:21

En Rosa canina 25-02-20
Blasco Rafael Blasco Rafael

Hola, a ver si me pueden ayudar con esta muestra r

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Unknown fungus on Quercus stick.
Guy Buddy, 02-05-2019 15:07
Ver long, slender asci, inamyloid. Spore measure ~11.3 × 4.3 µm. Slender sinuous paraphyses. Thanks!
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Jacques Fournier, 03-05-2019 15:08
Jacques Fournier
Re : Unknown fungus on Quercus stick.
Hi,
asci and ascospores remind me of Lopadostoma, though the apical ring should be amyloid. But in this genus it is small and easily overlooked.
I wonder if the black pustules are single ascomata or represent several ascomata surrounded by a stroma. A close-up on a horizontal or better a vertical section would answer this question.
Are you related to Buddy Guy?
Cheers,
Jacques
Guy Buddy, 03-05-2019 16:14
Re : Unknown fungus on Quercus stick.
Thanks Jacques.  Unfortunately this sample got ignored and I did not spend a lot of time on it.  I added a photo of the asci in melzers.  I dont see any reaction.  Picture three is the ascoma cut open, it appears to be one large perithecia, not loculated. The spores do look good for Lopadostoma, but i dont see any species that are not loculated.  Maybe Barrmaelia?
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Guy Buddy, 03-05-2019 17:56
Re : Unknown fungus on Quercus stick.
section
Jacques Fournier, 03-05-2019 18:26
Jacques Fournier
Re : Unknown fungus on Quercus stick.
this is much helpful.

There is a layer of some orange brown tissue around the perithecium. If a chip of stroma added to a drop of 5*10 % KOH releases an orange pigment, we are likely dealing with Creosphaeria sassafras, a Xylariaceae which is not uncommon in North America.

Jacques
Guy Buddy, 03-05-2019 20:57
Re : Unknown fungus on Quercus stick.
Thats definitely it! Thanks for your help!
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