30-04-2024 16:22
François BartholomeeusenDear forum members,On April 25 2024, I found one f
01-05-2024 23:22
Ethan CrensonHi all, Found late last week in a New York City p
29-04-2024 21:32
Robin Isaksson
Hi! Found in Sweden. Ascomata with haris, se
01-05-2024 12:54
F. JAVIER BALDA JAUREGUIHello, everyone.An idea for this pyreno, I found u
30-04-2024 19:43
Gernot FriebesHi!We observed this hyphomycete growing between le
29-04-2024 21:51
Mathias Hass
Hi everyone, Found on attached branches of top pa
28-04-2024 18:05
Bernard CLESSE
Bonsoir à toutes et tous,J'ai trouvé ce matin ce
on Prunus avium
Savic Dragisa,
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?
Savic Dragisa,
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.
Savic Dragisa,
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.
Savic Dragisa,
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.
Savic Dragisa,
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
Savic Dragisa,
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.
Savic Dragisa,
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.
