12-07-2025 16:45
Thierry Blondelle
Bonjour à tous,J'avais d'abord pensé à des stro
05-07-2025 12:38
Åge OterhalsI found this pyrenomycetous fungi in pine forest o
02-07-2025 18:45
Elisabeth StöckliBonsoir,Sur feuilles d'Osmunda regalis (Saulaie),
04-07-2025 20:12
Josep Torres
Hello.A fungus growing on the surface of a trunk o
20-06-2025 08:33
Josep Torres
Hello.Small, blackish, mucronated surface grains s
28-06-2025 16:00
Josep Torres
Hello.A tiny fungus shaped like globose black grai
on Prunus avium
Dragiša Savic,
28-04-2014 14:51
FELIPE SAN MARTÍN,
28-04-2014 16:59
Re : on Prunus avium
I PLUS OR MINUS? ASCOSPORE GERM SLIT ABSENT OR PRESENT; IF PRESENT, HOW DOES IT LOOK LIKE. ANAMORPH?
Dragiša Savic,
28-04-2014 17:20
Re : on Prunus avium
Hi Felipe,
What does it mean plus or minus?
I think it's germ slit visible on the last spore, its straight. I'll try tomorrow to do clearer photos.
What does it mean plus or minus?
I think it's germ slit visible on the last spore, its straight. I'll try tomorrow to do clearer photos.
FELIPE SAN MARTÍN,
28-04-2014 17:25
Re : on Prunus avium
I PLUS OR MINUS MEANS THE REACTION TO MELZER´S REAGENT OF THE ASCUS APICAL APPARATUS (IF PRESENT); IT CAN BE DISCOID (VERY LIKELY HERE I ASSUME), TRIANGULAR OR MORE OR LESS QUADRATE.
Dragiša Savic,
28-04-2014 18:11
Re : on Prunus avium
Unfortunately, I have not Melzer`s reagent. Is there any alternative?
FELIPE SAN MARTÍN,
28-04-2014 18:12
Re : on Prunus avium
Just white iodine.
Dragiša Savic,
29-04-2014 15:59
Re : on Prunus avium
I think it is now much better. I used Lugol.
FELIPE SAN MARTÍN,
30-04-2014 19:56
Re : on Prunus avium
Hi Savic: I have no idea on the identity of your fungus. Will be feasible, in order to identify the genus, to know th anamorph.
Dragiša Savic,
30-04-2014 23:05
Re : on Prunus avium
Thank you for your efforts Felipe
FELIPE SAN MARTÍN,
01-05-2014 03:03
Re : on Prunus avium
Dear Savic: You should better ask Alfred Granmo or Thomas Laessoe. They have seen similar fungi growing on Prunus spp.
Jacques Fournier,
01-05-2014 08:37
Re : on Prunus avium
Hi Dragisa and Felipe,
on the last photo ascospores appear longitudinally striate. I suggest a deviating fom of Nemania chestersii with a well-developed white basal tissue in its stroma.
To check:
Is the outer layer of the stroma carbonaceous? meaning hard, broken rather than cut
Ascospores of N. chestersii have a short inconspicuous germ slit on he convex side, best seen in KOH. Is it the case here?
In my region N. chestersii is not rare on Prunus avium, erumpent from lenticels scars, but I never encountered it with such a thick stroma. Otherwise the white tissue might be a proliferation of the host tissue.
Cheers,
Jacques
on the last photo ascospores appear longitudinally striate. I suggest a deviating fom of Nemania chestersii with a well-developed white basal tissue in its stroma.
To check:
Is the outer layer of the stroma carbonaceous? meaning hard, broken rather than cut
Ascospores of N. chestersii have a short inconspicuous germ slit on he convex side, best seen in KOH. Is it the case here?
In my region N. chestersii is not rare on Prunus avium, erumpent from lenticels scars, but I never encountered it with such a thick stroma. Otherwise the white tissue might be a proliferation of the host tissue.
Cheers,
Jacques
Dragiša Savic,
04-05-2014 22:35
Re : on Prunus avium
Hi Žak (Jacques on Serbian), how are you.
I've never seen Nemmania chestneri, spores are very similar but I think it is not. Nemmania growth on the surface and these are erumpent. There were many on the tree and they were all the same. I forgot to mention, young stromas are completely covered with white tissue.
I will send you a sample because it probably is not a common species.
I've never seen Nemmania chestneri, spores are very similar but I think it is not. Nemmania growth on the surface and these are erumpent. There were many on the tree and they were all the same. I forgot to mention, young stromas are completely covered with white tissue.
I will send you a sample because it probably is not a common species.
FELIPE SAN MARTÍN,
04-05-2014 23:44
Re : on Prunus avium
Hi Savic: I think Jaques can be right. Your gathering seems a species of Nemania judging by the type of stroma and apical ring morphology (similar to Xylaria spp.) . If it eventually yields a Geniculisporium-like anamorph, then there will be no doubt about its identity as the above-mentioned genus.
Dragiša Savic,
05-05-2014 07:13
Re : on Prunus avium
Thanks Felipe, it is very possible, I have seen only a N.serpens and its different. My knowledge is modest, but I'm learning.
