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14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

14-07-2025 11:19

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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Pestalotiopsis on Berberis?
Marc Detollenaere, 17-07-2023 21:01
Marc DetollenaereDear Forum,

On leaves of Berberis julianae I found some small pycnidia with 2-coloured 4-septate conidia, 18-20.5x5-5.4µ. In some I also found 1-3 cilia at the top.
Pestalotiopsis seems a possibility but is not known from Berberis.
Any suggestions?

Thanks in advance
Marc
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Chris Yeates, 20-07-2023 18:27
Chris Yeates
Re : Pestalotiopsis on Berberis?
Hello Marc

I suspect the material is a little old and appendages are often missing / hard to see? Have you considered Sarcostroma berberidis? See attachment

Best Wishes, Chris
Marc Detollenaere, 20-07-2023 23:22
Marc Detollenaere
Re : Pestalotiopsis on Berberis?
Thank you very much for your reply Chris.
I will have a closer look at Sarcostroma.

Marc
Marcel Heyligen, 21-07-2023 23:16
Marcel Heyligen
Re : Pestalotiopsis on Berberis?
"Pestalotia" berberidis Guba (1961)
Pustules erumpent, 75-375x75-150 µm. Conidia 4-celled, 19-25x7.5-10 µm, median cells subglobose and olivaceous or clear umber, hyaline apical cell conic-cylindrical and crownded with (2-)3(-4-5) appendages 19-37 µm long, pecicel
coarse and rather long. On twigs of Berberis 
Bernard Declercq, 22-07-2023 18:28
Bernard Declercq
Re : Pestalotiopsis on Berberis?
Hi Marc,

The conidia you show are typical for members of the Sporocadaceae. The species of this family are mostly  not host specific. 

The conidia of your collection have 1-3 apical appendages which are shorter than the conidium length and one small central, basal appendage. So, Sarcostroma should be excluded. Based on the key in annex Pestalotiopsis is the most appropriate genus and there Pestalotiopsis adusta seems to be the best match.

Best regards,

Bernard
Chris Yeates, 22-07-2023 22:35
Chris Yeates
Re : Pestalotiopsis on Berberis?
Ah! For some reason I had not looked at image #1 or seen the multiple appendages. I think Bernard has made the best suggestion.

Chris
Marc Detollenaere, 23-07-2023 08:45
Marc Detollenaere
Re : Pestalotiopsis on Berberis?
Thx for the support Bernard, Marcel and Chris
Bernard, your new key makes the difference.

Marc