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27-01-2012 23:59

Ridha EL MOKNI

Bonsoir Chers mycologues,une idée sur ce petit ba

26-01-2012 11:14

Michel RIMBAUD

Bonjour,J'examine un petit disco hyalin-grisâtre,

25-01-2012 12:57

Ron Bronckers

Hi to all,I am searching for an unpublished photo

18-01-2012 08:59

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je cherche l'article suivant :Eckblad, F.-

24-01-2012 19:47

Piet BORMANS Piet BORMANS

Il y a quelques jours j'ai trouvé Pleomassaria si

24-01-2012 20:29

Daniel Ghyselinck

Dear all,I have collected last week this minute (m

20-01-2012 19:56

Baeza  Yajaira Baeza Yajaira

hello there i have some doubts about this Mollisia

20-01-2012 18:45

Enrique Rubio Enrique Rubio

Hi to all:I have collected this Hypoxylon species

20-01-2012 19:11

Ron Bronckers

Good evening, Who has access to all the 25 volume

21-01-2012 15:10

Javier Ormad Javier Ormad

Hi all!Peziza en restos coprófilos humanos. Ejemp

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Mollisia on Typha_angustifolia
Dirk Gerstner, 30-08-2024 20:06
Mollisia on Typha_angustifolia

I found the following small Mollisia on 25.08.2024 on 'last year's' Typha at the edge of a pond.
The growth point was at the base of the stem lying in the water.
Steinbach, MTB 6507,23, approx. 400m altitude.


Diameter of the apothecia approx. 0.6 to 0.8mm,
Apices pulvinate when young, later flattened. Grey-blue to grey-brown, sometimes with lighter centre.


Asci approx. 64 x 7 ym, hooks +,difficult to recognise.
Porus reaction +bb
Paraphylls with refractive vacuoles KOH-
Marginal cells variously shaped, expiculum cells spherical
Spores OCI 2- 3, club-shaped
Spores [95% - 23 - QPr - v - H2O(nat) ] = 9.2 - 11 - 12.7 x 1.9 - 2.6 - 3.3 µm;


lav x bav = 11 ±0.36 x 2.6 ±0.13 µm, Qav = 4.2 ±0.18


According to the key from Ingo Wagner I ended up with 'Mollisia poaeoides Rehm 1891'.


What is your opinion?
Many thanks in advance


Best regards
Dirk

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Hans-Otto Baral, 30-08-2024 20:29
Hans-Otto Baral
Re : Mollisia on Typha_angustifolia
The spores remind me of M. hydrophila but there must be numerous crystals in the medulla.
Dirk Gerstner, 30-08-2024 21:06
Re : Mollisia on Typha_angustifolia
Hello Zotto, thank you very much for your quick reply.

I would have taken a wrong turn here with the key
1120 not on Phragmitis (reed) --> 1130
1120* on Phragmitis (reed) --> Mollisia hydrophila
Spores 9-12(15?) x 2-2.6, KOH- or KOH+


But I have crushed a whole apo here and if that passes as crystals? OK
I looked in your folder and can't really imagine what crystals are there, sorry.


Best regards
Dirk


 

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Hans-Otto Baral, 30-08-2024 21:31
Hans-Otto Baral
Re : Mollisia on Typha_angustifolia
best is to make a median section. There are many photos in my folder of species with crystals. They usually form large druses and are abundant.

E.g.:

Mollisia hydrophila, HB 8508a-2.jpg

Le Gal & Mangenot 1961 Contribution a l'etude de Mollisoidees IV (3e serie) lr.compressed_59.jpg

Mollisia mediella, HB 3453-2a KOH.JPG
Dirk Gerstner, 30-08-2024 22:05
Re : Mollisia on Typha_angustifolia
Hi, there are crystals but not the amount that Le Gall draws.
And not the quantity shown in 8508a.
You can see a subbiculum carpet on the underside of the apos, but there is nothing on the substrate.

Thanks again and best regards
Dirk

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Hans-Otto Baral, 31-08-2024 09:13
Hans-Otto Baral
Re : Mollisia on Typha_angustifolia
Good section! Not sure if there are crystals at all. They are always inside the apothecium, not among the subiculum.

M- hydrophila is a difficut species because there exist some with KOH yellow reaction and some without. But maybe yours is not related to any of these.
Dirk Gerstner, 01-09-2024 08:50
Re : Mollisia on Typha_angustifolia
Hello Zotto,

thank you very much for your support and opinion.
Then I will file the find under Mollisia_cf. hydrophylla KOH-, few to no crystals.

Herzliche Grüße
Dirk

Ingo Wagner, 07-09-2024 06:58
Ingo Wagner
Re : Mollisia on Typha_angustifolia
Hi Dirk!

With clavate spores with OCI = 2 and KOH-negative reaction compare also with "Mollisia tomentosa":

https://drive.google.com/drive/u/0/folders/11dtcLhIyx8rbRjAJv_gdhMM-vz3YT5fn?tid=0B5SeyOEkxxZhYVZub0N1aGY5YTg

Greetings
Ingo
Hans-Otto Baral, 07-09-2024 09:49
Hans-Otto Baral
Re : Mollisia on Typha_angustifolia
Good idea!
Dirk Gerstner, 08-09-2024 13:42
Re : Mollisia on Typha_angustifolia

Hi Ingo,


Thank you very much for your information.


The picture 'Mollisia hydrophila 19.IX.2017-2 in the folder fits almost exactly to the micro features I have noticed.
In Ekanayaka's description, however, the asci are described as being significantly longer than mine were.
Here are three examples of my measurements: 64x6.5; 60 x 5.7, 65 x6.5 ym


I also saw the pulvinate very well, which I had not noticed in 'my' previous Mollisia finds.


Could well have something to do with the location under water, as it was no longer visible later (one or two) days later.


Thank you and best regards
Dirk


 

Ingo Wagner, 08-09-2024 20:26
Ingo Wagner
Re : Mollisia on Typha_angustifolia
Hi Dirk!

Dirk:
"In Ekanayaka's description, however, the asci are described as being significantly longer than mine were.
Here are three examples of my measurements: 64x6.5; 60 x 5.7, 65 x6.5 ym"

It is important in which state you measure the asci, keyword turgor.
https://asco-sonneberg.de/pages/gallery/ascus-turgor40991.php?group_id=29201&position=2

Greetings
Ingo