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B Shelbourne
• Mollisia on tree leaves: On dead Quercus leave
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Michel Hairaud
Bonjour , Voici une récolte d'une Rhytismataceae
An Encoelia like fungus on Quercus leaf
Michel Hairaud,
02-11-2012 21:23
BonsoirHi to all,
Cette espèce récoltée sur feuille de chêne ressemble macroscopiquement à Encoelia fuckelii, mais les caractères micro s'en éloignent. Quelqu'un peut il m'aider pour cette détermination ?
Would someone help me with the identfication of this Encoelia-like fungus collected on Quercus leaf ? The macro habitus is very much like E. fuckelii but several micro data are quite different .
Asques H+, IKI blue, rather Hymenoscyphus type, 65- 67 x7-8 µm
Spores clavate, Guttulation = 2, 11-12 x 4,5-5
Paraphyses straight,cylindrical, no VBs CRB negative
EE globulosa , light to dark brown, x7-12 (20) µm
ME intricata x 2,5-5 µm with gelatinized long and 1µm large hyphae
Merci de votre aide
Amitiés
Michel
Hans-Otto Baral,
02-11-2012 21:38
Re : An Encoelia like fungus on Quercus leaf
Mollisia spectabilis Kirschst.
Collection from England (by Peter Thompson):
07.11.2007 Chaddesley Wood, Worcestershire Quercus sp. leaf Up to 2.5mm diameter sp. 10 - 15 x 4 - 5um. Apothecia consist of a watery grey hymenium, a whitish grey margin, often appearing scalloped and an external surface which is yellowish brown. Its preferred substrate is wet leaves and occasionally twigs of oak (Quercus sp.). Not common.?
Yes, really not common! And difficult to place. The apical ring looks like Hymenoscyphus!
Zotto
Collection from England (by Peter Thompson):
07.11.2007 Chaddesley Wood, Worcestershire Quercus sp. leaf Up to 2.5mm diameter sp. 10 - 15 x 4 - 5um. Apothecia consist of a watery grey hymenium, a whitish grey margin, often appearing scalloped and an external surface which is yellowish brown. Its preferred substrate is wet leaves and occasionally twigs of oak (Quercus sp.). Not common.?
Yes, really not common! And difficult to place. The apical ring looks like Hymenoscyphus!
Zotto
Michel Hairaud,
02-11-2012 23:03
Re : An Encoelia like fungus on Quercus leaf
Hi Zotto, thanks a lot for such a quick and relevant answer.
I have just read also the former discussion on Ascofrance after a post by Uwe Lindemann.
I had given up the genus Mollisia becaus e of lack of paraphyses vacuolar content and gelatinized hyphae in medulla
I can see on Index fungorum that the author of the M. spectabilis combination (1906) renamed it 30 years later into Cenangella and Cenangium...
I doubt placement in Mollisia will still resist another century. Do you know about any molecular analysis or else for that species ?
Amitiés
Michel
I have just read also the former discussion on Ascofrance after a post by Uwe Lindemann.
I had given up the genus Mollisia becaus e of lack of paraphyses vacuolar content and gelatinized hyphae in medulla
I can see on Index fungorum that the author of the M. spectabilis combination (1906) renamed it 30 years later into Cenangella and Cenangium...
I doubt placement in Mollisia will still resist another century. Do you know about any molecular analysis or else for that species ?
Amitiés
Michel
Hans-Otto Baral,
02-11-2012 23:09
Re : An Encoelia like fungus on Quercus leaf
This would have been my suggestion, to give someone your material for sequencing :-)
Maybe Andreas has interest? Or knows the species?
Cenangium seems hardly a better genus, and Cenangella seems to be a synonym of Dermea.
Zotto
Maybe Andreas has interest? Or knows the species?
Cenangium seems hardly a better genus, and Cenangella seems to be a synonym of Dermea.
Zotto
Michel Hairaud,
02-11-2012 23:27
Re : An Encoelia like fungus on Quercus leaf
How about Microencoelia ?
(Spore shape very disctinct)
I would also appreciate Andreas's opinion . M. spectabilis is not to be found in his provisional key.
I join a pic of gelatinized medulla
Michel
(Spore shape very disctinct)
I would also appreciate Andreas's opinion . M. spectabilis is not to be found in his provisional key.
I join a pic of gelatinized medulla
Michel
Hans-Otto Baral,
02-11-2012 23:33
Re : An Encoelia like fungus on Quercus leaf
Sorry, but I cannot see an obvious gelatinization on your pics. The hyphae lie rather close to each other, surely a bit of gel may be there, but that is rather normal. Are the apos somewhat gelatinous?
"Microencoelia" :-) Well, we have presently a new find of E. glauca from Ireland (I have only the photos), which is a cupulate fungus with rather thin flesh and pustulate exterior, quite unlike this here.
Zotto
"Microencoelia" :-) Well, we have presently a new find of E. glauca from Ireland (I have only the photos), which is a cupulate fungus with rather thin flesh and pustulate exterior, quite unlike this here.
Zotto
Yatsiuk Iryna,
19-11-2012 18:44
Re : An Encoelia like fungus on Quercus leaf
Dear Zotto and Michel
Looking through this topic I remembered about one unidentified specimen which I collected in Ukraine on Quercus leaves. I think it looks like that Mollisia spectabilis, isn't it?
Apothecia: up to 2 mm hymenium pale grey, ochraceous when drying, excipulum brown.
Asci: with plenty of croziers, IKI+, 8-spored, 98-118*10,2-12,3 um.
Spores: 11,5-15,5-5-6 um
With best regards,
Irina
Looking through this topic I remembered about one unidentified specimen which I collected in Ukraine on Quercus leaves. I think it looks like that Mollisia spectabilis, isn't it?
Apothecia: up to 2 mm hymenium pale grey, ochraceous when drying, excipulum brown.
Asci: with plenty of croziers, IKI+, 8-spored, 98-118*10,2-12,3 um.
Spores: 11,5-15,5-5-6 um
With best regards,
Irina
Yatsiuk Iryna,
19-11-2012 18:46
Re : An Encoelia like fungus on Quercus leaf
Ectal excipulum, medulla, subhymenium
Hans-Otto Baral,
19-11-2012 19:10
Re : An Encoelia like fungus on Quercus leaf
Yes, of course, no doubt!
Zotto
Zotto
Yatsiuk Iryna,
19-11-2012 19:13
Re : An Encoelia like fungus on Quercus leaf
Oh, I'm really happy that I looked in this topic!
Thank you, Zotto for identification and thank you, Michel for topic!
Irina
Thank you, Zotto for identification and thank you, Michel for topic!
Irina
Michel Hairaud,
19-11-2012 19:26
Re : An Encoelia like fungus on Quercus leaf
Hi Irina,
So, we have a better idea of this species distribution in Europe, though still probably partial.
Amitiés
Michel
So, we have a better idea of this species distribution in Europe, though still probably partial.
Amitiés
Michel