Didymella? on Ribes - Forum ASCOFrance

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Didymella? on Ribes

Marja Pennanen, 25-02-2015 19:59

Hello folks,

these black spots were collected today on Ribes nigrum. Here is still winter with snow over half a meter.
They are about 0,5-1 mm wide.
The spores are two celled, hyaline, about 20-28x8-9.
Asci are thick walled, very short stipate, 90-120x15-18.
I ended to Didymella (totally unfamiliar genus for me), but my litterature contains no fitting species. D. proximella almoust fits, but the substrate...

I hope, that someone here has better knowledge and can help: Marja

Alain GARDIENNET, 25-02-2015 20:16

Re : Didymella? on Ribes

Hi Marja,

see towards Dothiora ribesia.

Alain

Marja Pennanen, 25-02-2015 20:28

Re : Didymella? on Ribes

Dear Alain,

I'll check that, if I can find the description...

Merci: Marja

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