16-02-2026 21:25
Andreas Millinger
Good evening,failed to find an idea for this fungu
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
17-02-2026 17:26
Nicolas Suberbielle
Bonjour à tous, Je recherche cette publication :
15-02-2026 04:32
Tomaz Vucko
One more specimen that is giving me some descent a
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Isabelle CharissouBonjour, est-ce que quelqu'un pourrait me fournir
16-02-2026 18:34
Thierry Blondelle
Bonjour,La micro de cet anamorphe de Hercospora su
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Joanne TaylorLast week we published the following paper where w
16-02-2026 16:53
Isabelle CharissouBonjour, quelqu'un pourrait-il me transmettre un
A rhizodiscina-like collection
Michel Hairaud,
28-04-2022 23:49
Bonjour, Je viens de recevoir cette récolte aux apothécies noires , stipitées, larges de 3-5 mm.
Asques aux parois amyloïdes, 95-100 x 7-8 µm. ectal de cellules rondes à parois brun foncé . Spores hyalines, septées, biguttulées, et non lisses (verrues très petites et peu visibles)
11-13 x 4,5-5 µm
Paraphyses septées , élargies au sommet et recouvertes d une matière amorphe brune.
Merci pour toute indication de piste de détermination. Amitiés
Michel
Hans-Otto Baral,
29-04-2022 08:00
Re : A rhizodiscina-like collection
Hi Michel
very strange thing! I am sure you mean 3-5 mm, so quite a large fungus. On what kind of wood did it grow? I assume on the moist ground?
To me this looks like a Patinella, I assume Luis Quijada would be interested.
Zotto
Michel Hairaud,
29-04-2022 08:23
Re : A rhizodiscina-like collection
Thanks, Zotto,
Yes of course 3-5 mm large apos. I will correct it
My Ref : MH 80422
I wanted to mention that none of the apos have a proeminet margin, which should be a usual character in Patellaria.
Michel
Yes of course 3-5 mm large apos. I will correct it
My Ref : MH 80422
I wanted to mention that none of the apos have a proeminet margin, which should be a usual character in Patellaria.
Michel
Hans-Otto Baral,
29-04-2022 09:32
Re : A rhizodiscina-like collection
I said Patinella, but I am wrong, Patinella is inamyloid. Compare Pseudosclerococcum golindoi. Sclerococcum is the new name for Dactylospora, and Pseudosclerococcum is a related genus in which the asci do not have the pronounced amyloid apical cap but react more diffusely along the entire ascus wall.
Tell ,me if you have access to it:
Olariaga, I.; Teres, J.; Martín, J.; Prieto, M.; Baral, H.O. (2019). Pseudosclerococcum golindoi gen. et sp. nov., a new taxon with apothecial ascomata and a Chalara-like anamorph within the Sclerococcales (Eurotiomycetes). Mycological Progress 18: 895–905. - https://doi.org/10.1007/s11557-019-01500-7
Michel Hairaud,
29-04-2022 13:29
Re : A rhizodiscina-like collection
This is the good hint, Zotto !
The main difference (amyloid ascus walls ) may not be an obstacle as this reaction is very fleeting (hardly a few minutes ) though systematic and clear, and easier to observe on thicker preps. (and none on the apex or chamber)
Then the hemiamyloid reaction is the rule.
The ascus dehiscence is the very same as described in the mentioned paper. ...
As to the ectal it is actually mainly globosa in my collection
I also think I can observe a chalara-like asexual morph on the substrate.
Michel
The main difference (amyloid ascus walls ) may not be an obstacle as this reaction is very fleeting (hardly a few minutes ) though systematic and clear, and easier to observe on thicker preps. (and none on the apex or chamber)
Then the hemiamyloid reaction is the rule.
The ascus dehiscence is the very same as described in the mentioned paper. ...
As to the ectal it is actually mainly globosa in my collection
I also think I can observe a chalara-like asexual morph on the substrate.
Michel
Hans-Otto Baral,
29-04-2022 16:38
Re : A rhizodiscina-like collection
Did you also photograph the anamorph?
I compared spore size which fits very well. Surely it is this species.
Now I wish to know the substrate, any idea? And geographical origin?
Michel Hairaud,
01-05-2022 08:13
Re : A rhizodiscina-like collection
Happy May day to all,
The Chalara-like observed on the substrate does not look like the one in the quoted paper. (Obtained in culture as I understood)
There is no certainty about the substrate . Could be oak or beech according to my correspondant.
Please see cross section pics.
The fleetin reaction is indeed systematic and lasts only a very few minutes.
Collection date : France, Manche, (50) St Sauveur Le Vicomte, forêt de ST Sauveur. 23 04 2022 on a decaying log.
Amitiés
Michel
The Chalara-like observed on the substrate does not look like the one in the quoted paper. (Obtained in culture as I understood)
There is no certainty about the substrate . Could be oak or beech according to my correspondant.
Please see cross section pics.
The fleetin reaction is indeed systematic and lasts only a very few minutes.
Collection date : France, Manche, (50) St Sauveur Le Vicomte, forêt de ST Sauveur. 23 04 2022 on a decaying log.
Amitiés
Michel
Hans-Otto Baral,
01-05-2022 20:48
Re : A rhizodiscina-like collection
I would not say chalara-like to this, and who knows if it belongs to the species.
The wood is obviously no Quercus, but it is necessary to use a lower magnification to see the pores for at least one entire year of growth.
Yes, this IKI RB reaction is just what is described in the paper.
Michel Hairaud,
03-05-2022 15:09
Re : A rhizodiscina-like collection
Hi Zotto,
I agree, the asexual morph found on the substrate is not necessary linked with the Pseudosclerococcum presence.
As to the IKI reaction, I may have not been clear : the blue fleeting reaction has been observed whithout KOH pretreatment, which I do not see in the princeps description.
The piece of substrate received is unfortunately too thin and decayed to get a section showing at least a year's growth .
After the description, it seems that the species was collected several times on the same log . I will ask my correspondant to try new collections after long rainy periods.
Amitiés. Michel
I agree, the asexual morph found on the substrate is not necessary linked with the Pseudosclerococcum presence.
As to the IKI reaction, I may have not been clear : the blue fleeting reaction has been observed whithout KOH pretreatment, which I do not see in the princeps description.
The piece of substrate received is unfortunately too thin and decayed to get a section showing at least a year's growth .
After the description, it seems that the species was collected several times on the same log . I will ask my correspondant to try new collections after long rainy periods.
Amitiés. Michel
Hans-Otto Baral,
03-05-2022 21:34
Re : A rhizodiscina-like collection
Ah I see, the protologue says IKI red, type RR, and you observed type RB!
Good! Maybe variation.
Bernard Declercq,
10-05-2022 12:52
Re : A rhizodiscina-like collection
Hi Zotto,
I am interesting receiving mentioned paper. Thanks in advance.
Bernard
I am interesting receiving mentioned paper. Thanks in advance.
Bernard
Michel Hairaud,
10-05-2022 14:01
Re : A rhizodiscina-like collection
Sent to your mail box
Michel
Michel