30-05-2013 20:08
M. M. GotinkA fews days ago I found this Pezizella on dead pet
03-06-2013 01:35
Esquivel-Rios EduardoSaludos.Recientemente encontramos este especimen q
15-06-2013 19:57
Lieve Deceuninck
Dear ForumBonjour Forum Literature request : Myco
15-06-2013 16:48
Gilles Corriol
J'aimerais une petite confirmation pour cette dét
15-06-2013 15:18
Gilles Corriol
Bonjour,Une récolte à la base de tige mortes de
15-06-2013 16:21
Gilles Corriol
Un autre Ophiobolus, cette fois sur Echium vulgare
Asco on Arnica
Maren Kamke,
16-06-2013 16:39
Hello 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
Hans-Otto Baral,
16-06-2013 17:25
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
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
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.
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
Hans-Otto Baral,
17-06-2013 06:56
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
Arnica is not in the list of substrates in Hein 1976.
Zotto