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Asco sur branche pourrie de noisetier (Corylus avellana)
Bernard CLESSE,
14-02-2017 23:46
Bonsoir à tous,La semaine dernière, j'ai trouvé cet asco ressemblant fort à un Peziza sur branche pourrie de noisetier (Corylus avellana).
a) asques octosporés, à spores unisériées, IKI-Â
b) spores elliptiques, remplies complètement de petites gutttules, lisses : 19-24x7-9
n.b. : certaines spores présentent un petit apicule à chaque extrémité (germination de spores secondaires ??)
c) paraphyses filiformes, septées, ramifiées, à contenu réfringent vers l'extrémité
Pas d'idée…
Bernard
Bernard CLESSE,
14-02-2017 23:48
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
Peut-être un Rutstroemia ??
Bernard
Bernard
Hans-Otto Baral,
15-02-2017 07:40
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
Hi Bernard
could you show us a photo of an ascus tip in IKI? This reminds me of Rutstr. alni from the alps.
Zotto
could you show us a photo of an ascus tip in IKI? This reminds me of Rutstr. alni from the alps.
Zotto
Martin Bemmann,
15-02-2017 11:06
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
Dear Zotto,
there are IKI- ascus tips in the third picture.
regards
Martin
there are IKI- ascus tips in the third picture.
regards
Martin
Hans-Otto Baral,
15-02-2017 11:20
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
Dear Martin
I am unable to see that :-(
Zotto
I am unable to see that :-(
Zotto
Martin Bemmann,
15-02-2017 11:23
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
sorry, it is the fourth picture....
Hans-Otto Baral,
15-02-2017 11:28
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
yes, I see the remark "IKI", but I do not see any IKI. This may be a similar case as in the recent Pezicula which was also said to be negative. Bernard, could you add so much Lugol that a yellow colour stains the plasma inside the ascus?
Bernard CLESSE,
15-02-2017 11:33
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
Hello everyone,
See you this evening.
Bernard
Indeed the asci are IKI- but I will try again by putting more lugol and leaving perhaps a little more time in order to see a possible change at the top of the asci
I doubt even though it is a Rutstroemia because I find that apothecia is not thick towards the base and the stem here is short and not thick like usual in this genus.
See you this evening.
Bernard
Bernard CLESSE,
15-02-2017 18:24
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
Hi Zotto,
I don't know how it's possible today but the asci are IKI+. Here are some pictures.
Diameter apothecia : 1,5 cm maximum
Bernard
I don't know how it's possible today but the asci are IKI+. Here are some pictures.
Diameter apothecia : 1,5 cm maximum
Bernard
Hans-Otto Baral,
15-02-2017 18:49
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
Great. I assume you don't have the desciption of R. alni?
Could you  please tell me the collection data? How sure is Corylus?
Could you  please tell me the collection data? How sure is Corylus?
Bernard CLESSE,
15-02-2017 19:08
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
Hi Zotto,
If I understand well, Â you tell me it's Rutroemia alni ?
Indeed, I dont 'have the description of this species. Is it a rare species ?
I am practically sure that the host is Corylus avellana but I will ask the opinion of others mycologists.Â
Then I'll give you dat collection.Â
Bernard
If I understand well, Â you tell me it's Rutroemia alni ?
Indeed, I dont 'have the description of this species. Is it a rare species ?
I am practically sure that the host is Corylus avellana but I will ask the opinion of others mycologists.Â
Then I'll give you dat collection.Â
Bernard
Hans-Otto Baral,
15-02-2017 20:03
Re : Asco sur branche pourrie de noisetier (Corylus avellana)
You can try a radial section of the wood, then you will find the following ladder-like structure.
 You can look at my alni folder. There is also a sample by Patrice from lowland. And Breitenbach's R. firma (153) seems to be alni too, and they say Corylus.
 You can look at my alni folder. There is also a sample by Patrice from lowland. And Breitenbach's R. firma (153) seems to be alni too, and they say Corylus.
Roffler-amp-Baral-2006-Rutstroemia-alni-1-0001.jpg
Roffler-amp-Baral-2006-Rutstroemia-alni-2-0001.jpg
Roffler-amp-Baral-2006-Rutstroemia-alni-3-0001.jpg