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On Abies alba. Dothideo?
Pavol Palo, 28-11-2016 18:56
Hello,

this fungus (black 0,5-1mm) was found on a dead fallen branches of Abies alba. I do not know the genus / species.


Spores: hyaline dictyospores with (1-3)4-5 horizontal and 0-1 vertical septa
18-27 x 6-10 µm


Thank you for your help,
Pavol

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Peter Püwert, 28-11-2016 19:26
Peter Püwert
Re : On Abies alba. Dothideo?
Hello Pavol,
in my opinion is this
Curreya pityophila (J.C. Schmidt & Kunze) Arx & E. Müll., Stud. Mycol. 9: 80 (1975)
Synonymy:
Cucurbidothis pityophila (J.C. Schmidt & Kunze) Petr., Annls mycol. 19(3-4): 201 (1921)
Cucurbitaria pityophila (J.C. Schmidt & Kunze) De Not. [as 'pithyophila'], Sfer. Ital.: 60 (1863). After IF, see also Database.
I search the species for a long time, however, she has not thought yet.
Greetings Peter.
Alain GARDIENNET, 29-11-2016 07:20
Alain GARDIENNET
Re : On Abies alba. Dothideo?

Hi Pavol,


Just some questions :


could you describe ascomata ? Are they sphaerical (or conchate ?) ? Do they collapse when dry ? We don't see very well with pictures.


Could you also give more informations about hamathecium ?


Described ascospores alone are not enough to name a fungus.


Alain


 

Pavol Palo, 29-11-2016 19:57
Re : On Abies alba. Dothideo?
Hi Alain,
ascomata are not sphaerical (I can not shoot better so I'll try to draw a picture). It is quite strong and even after drying, keeps its shape.
Pavol

p.s. Ostreola formosa ?
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Björn Wergen, 03-12-2016 12:59
Björn Wergen
Re : On Abies alba. Dothideo?
Hi Pavol,

this is clearly not Curreya pithyophila, which has globose and clustered ascomata. Your recolt indeed seems to fit Ostreola formosa, which was described by Barr as having spores around 15-21x6,5-9,5µm.

Is it possible to receive a part of this collection for studying?

regards,
björn
Alain GARDIENNET, 03-12-2016 17:05
Alain GARDIENNET
Re : On Abies alba. Dothideo?

It's better !


I thought of course at Mytilinidiaceae.


Alain