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28-03-2026 17:41

Mollisia sur Molinia
Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

30-03-2026 09:53

Lachnum mollissinum ?
Yanick BOULANGER

BonjourVoici des petites fructifications poilues s

30-03-2026 12:18

Demande d'aide
Sylvie Le Goff

BonjourRécolté sur la base de Pteridium aquilinu

30-03-2026 12:03

Dumontinia on Ficaria?
William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

27-03-2026 10:47

Stictis cf. friabilis and literature request
Ã…ge Oterhals

I have tentatively identified this Stictis to S. f

28-03-2026 07:55

White Orbilia with allantoid spores
Marc Detollenaere Marc Detollenaere

Hello everybody,Yesterday I found a number of whit

26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ã…ke Widgren Ã…ke Widgren

Hello,I found this one in October last year, on r

27-03-2026 15:23

Trichopezizella barbata?
Gernot Friebes

Hi,this Trichopezizella deviates from typical T. b

27-03-2026 15:08

Coelomycete on Cirsium
Gernot Friebes

Hi,I'm looking for help with this coelomycete on C

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Diaporthe? on Berberis communis
Jakob Schneller, 24-09-2015 16:59
Jakob Schneller

The spores are extrordinary large 36-39 um x 18.20 um. The asci 140-160 um. Pyrenocarpous,growing immersed and the opening splitting the  the bark, black. on branches of Berberis


 


 


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  • message #38086
  • message #38086
  • message #38086
Stoykov Dimitar, 25-09-2015 14:11
Stoykov Dimitar
Re : Diaporthe? on Berberis communis
Hi, Dear Jacob,

Maybe useful to try another genus. Beak of the perithecium is not seen (in genera of the Diaporthaceae and Melanconidaceae they always present).

Regards, Dimitar
Stoykov Dimitar, 26-09-2015 09:10
Stoykov Dimitar
Re : Diaporthe? on Berberis communis
I have checked, as far as possible,  in Wehmeyer's monographs (about Diaporthe - 1933), and about Melanconis and allied genera (1941). The stroma of your find looks like those of Melanconidaceae , but I don't know if the spores have appendages. If present - this fungus  could be attached to  Prosthecium (maybe an undescribred one), but I am not familiar with Prosthecium.
In Wehmeyer's monograph (1933) there are 2 species amongst the large spored ones - Cryptodiaporthe magnispora (Acer)  and C. pyrrhocystis (Alnus, Coprylus)  - but the spores are not constricted at septa and are much thinner (6) 7-9 micrometers.
Alain GARDIENNET, 27-09-2015 16:02
Alain GARDIENNET
Re : Diaporthe? on Berberis communis

Bonjour,


Before searching in Diaporthales, the first question should be : are the asci bitunicate or unitunicate ?


Alain

Stoykov Dimitar, 28-09-2015 14:21
Stoykov Dimitar
Re : Diaporthe? on Berberis communis
Yes, the right question  to answer. Thank you,  Alain!
Regards,

Dimitar