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02-05-2013 19:16

Sporomiella pilosa?
hannie wijers

I think this could be Sporomiella pilosa? I found

03-05-2013 04:18

Xylaria putamina description
Godorova Olga Godorova Olga

Hello, dear friends. We've found two interesting s

02-05-2013 18:45

Pyrenomycète allongé sur graminée
Gilles Corriol Gilles Corriol

Est-ce que quelqu'un peut m'orienter dans un genre

02-05-2013 19:03

Hyaloscyphaceae à poils pigmentés
Gilles Corriol Gilles Corriol

Bonjour,Voici une Hyaloscyphaceae pour le moment i

23-03-2013 12:29

New Book about the Fungal Ascomycota - Soon to be Published
Peter Thompson

Hello Everyone,With the kind permission of Christi

01-05-2013 09:14

Pyrenopeziza sur pétiole de Tilia
Gilles Corriol Gilles Corriol

Bonjour,Une récolte de Pyrenopeziza sur pétiole

01-05-2013 19:50

REQUEST OF ARTICLES
Francisco Calaça Francisco Calaça

Hi for all,someone have this articles? Can send me

01-05-2013 18:53

sordaria?
brigitte vignot

bonjourj'ai trouvé sur crotte de lapin cet asco q

30-04-2013 15:48

ascobolus?
hannie wijers

When I was looking for another frb I also got this

30-04-2013 07:52

Cyathicula sur Ruscus
Gilles Corriol Gilles Corriol

Bonjour,Voici une récolte de Cyathicula faite sur

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Asco on Arnica
Maren Kamke, 16-06-2013 16:39
Maren KamkeHello everybody,
I found an ascomycete (0,1 mm) on arnica.
Spores (11-13) 11,72 x 3,88 (3-4,5) µm, with two bigger oildrops and many small ones on both ends.
Asci 48-50 x 9-11, IKI blue, paraphyses 3 µm.
Thanks
Regards
Maren
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Hans-Otto Baral, 16-06-2013 17:25
Hans-Otto Baral
Re : Asco on Arnica
Hi Maren

you made no mistake with 0.1 mm? And it was in the mountains? On the old stems?

No idea actually. I looked in my database for Asteraceae with such a spore size, no good result.

Something of the Naevioideae perhaps. Schizothyrioma has larger apos and is reported on Achillea.

Zotto
Maren Kamke, 16-06-2013 23:15
Maren Kamke
Re : Asco on Arnica
Hi Zotto,
thank you for your opinion.
There is an artifical arnica meadow on the westcoast of Schleswig-Holstein, we accompanied the botanical sektion to this spot to look after ascomycetes on arnica. What we didn't knew was that the meadow is mowed regularly and the clippings are removed. So we searched for arnica-stems. The botanist I talked to identified my stem as arnica, but it is not impossible that he was wrong.
On the same stem I found Cyathicula tomentosa,  Mollisia cf. revincta (still without spores :( and Leptospora rubella.

The apos are really very small, max up to 0,15 mm.
I checked with the Naevioideae? on your DVD, the color and the macroscopical habitus matches Ploettnera solidaginis, but the microscopical details of course not.
The spores get one septa with age.
I think it could be a Diplonaevia sp. but which one?


Regards Maren

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Hans-Otto Baral, 17-06-2013 06:56
Hans-Otto Baral
Re : Asco on Arnica
Ploettnera is not a bad idea, but it has a special type of apical ring (only the lower part of the wall reactive). Diplonaevia has a strongly protruding margin, which is to some extent also the case in your specimen. A Pyrenopeziza would be an alternative genus for your fungus, though such wide spores are unusual.

Arnica is not in the list of substrates in Hein 1976.

Zotto