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21-03-2026 22:59

Petr Soucek

Good evening, I would appreciate some advice on th

21-03-2026 15:13

Lepista Zacarias

Hello everyone, Does any one know of any literatu

20-03-2026 12:53

Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

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Didymosphaeria diplospora?
Björn Wergen, 08-12-2012 11:44
Björn WergenHello everybody,

I am back with some new, unclear pyrenomycetes from old attached Cornus alba twigs and I think this one is definitely a Didymosphaeria, but I do not know how to identify them. DENNIS 1978 gives a description of D. diplospora, growing on Rubus but also on Cornus and not uncommon, but the spores do not fit in size.

Sp. are 13-16x5,5-6µm, brown and very finely warted to nearly smooth, Asci uniseriate and 80-90x7-9µm.

Any better idea than my D. diplospora? :)

regards,
björn
  • message #20671
  • message #20671
Christian Lechat, 08-12-2012 11:58
Christian Lechat
Re : Didymosphaeria diplospora?
Hi Björn,
Didymosphaeria diplospora is a synonym of D. oblitescens

Regards,
Christian
Björn Wergen, 08-12-2012 11:59
Björn Wergen
Re : Didymosphaeria diplospora?
Damn this, I missed checking the new name, sorry :D

But anyway, this does not seem to be the "real" D. oblitescens, which I had several times on Rubus.
Yan Yinh, 08-12-2012 12:46
Your morphological understanding
Species of the genus Didymosphaeria have pseudothecia but no perithecia. You are aware of this?

Inform us about the characteristics of your cultures and what are the results of the sequencing?

You have no data. O.k. it is no problem. Because from Germany, we learn that there is buy a laboratory for 6.000 to 8.000 euros and then "ich mache dann DNA". If you are going to have a laboratory, please tell me. I will send you some of my students. Who want to learn from German specialists very much. Likewise, we read about a Mr HOB "mit Schwerpunktthema Kulturen und molekulare Methoden." You see, everything in Germany is easier than you think.

Yan
Björn Wergen, 08-12-2012 13:04
Björn Wergen
Re : Didymosphaeria diplospora?
Hi Yan,

yes, I am, in my opinion this species has pseudothecia, because there was no clear ostiolus breaking through the bark, just the whole ascomata.

If it has perithecia, which species would be possible then?


Ouh, Yan, I am just an amateur mycologist, I do not have the chance to sequence funghi. But perhaps one time I will have.

regards,
björn
Paul LEROY, 08-12-2012 22:29
Re : Didymosphaeria diplospora?
Hello Bjorn,
Oui il s'agit très probablement de Didymosphaeria oblitescens. Les mensurations et les caractères
des spores et des asques conviennent pour cette espèce. Elle est assez commune et se
développe sur une large gamme  d'hôtes , exclusivement feuillus.

Très cordialement
Paul LEROY
Björn Wergen, 09-12-2012 02:01
Björn Wergen
Re : Didymosphaeria diplospora?
Hi Paul,

thank you very much for your opinion :)

regards,
björn