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17-04-2021 15:01

Khomenko Igor Khomenko Igor

Hi, I'm having trouble identifying this hairy disc

17-04-2021 19:34

Juuso Äikäs

This Thursday I found some tiny discos growing on

16-04-2021 08:53

Pierre-Yves Julien

Bonjour à tous, 1er post pour moi sur ce forum.R

17-04-2021 13:41

Angel Pintos Angel Pintos

Hello everybody,Anyone on the forum is from Götti

16-04-2021 22:02

Bo Valeur Bo Valeur

Hi thereThis Nice Lachnum was found on a dead bran

17-04-2021 11:45

Karl Soler Kinnerbäck Karl Soler Kinnerbäck

Hi!Could this be a Nigrograna? I first thought it

09-04-2021 18:44

Mirek Gryc

Hi.Probably anamorph but I have never seen so big

17-04-2021 09:18

Savic Dragisa

Hello everyone,on a corn stalk. I have no idea wha

12-04-2021 19:35

Mirek Gryc

Hello everyone.I'm not sure if it was a branch of

15-04-2021 14:24

Castillo Joseba Castillo Joseba

Me mandan el material seco recolectado en el compo

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Arnium sudermanniae?
Joop van der Lee, 20-02-2021 14:56
Joop van der LeeFound on horse dung.

Perithecia: 784x587 um with a cilindrical 163x155 um long neck.

Asci: 8-spored; not able to measure the length and width.

Spores: Biseriate; 46.5-52.4x22.4-25.9 um;
Upper cauda; gelatinous, transparent, 62.8-107x9.85-10.75x4.7-5.2 um with a longitudinal furrow almost running the whole length of the cauda, reniform.
Lower cauda; gelatinous, transparent 57.5-111.5x10.2-11 um, hollow.

It looks like both caudae are connected to the spore head by means of a transparent light brown ring. (photo 8)

Because of the length of the spore it has an almost flat side when in side vieuw this in contrast with the spores from A. caballinum.


Joop



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Michel Delpont, 20-02-2021 15:19
Michel Delpont
Re : Arnium sudermanniae?
The dimensions of the spores could correspond, on the other hand the upper cauda should be eccentric. It would also be necessary to verify the presence of a single germ pore and an appical apparatus on the asci.

The perithecia also have numerous hyphoid hairs.

Michel.


Joop van der Lee, 20-02-2021 15:43
Joop van der Lee
Re : Arnium sudermanniae?
Hello Michel,

I probably did find A, caballinum as well with spore sizes of 34.5-40.4x18.9-20.9 um I will show them in the next topic.

I will look if I can find better species to show you.


Joop

Joop van der Lee, 21-02-2021 11:21
Joop van der Lee
Re : Arnium sudermanniae?
Hello Michel,

I am not sure if the following photos of spore heads coincide with A. caballinum mainly because of the furrow occuring in the upper cauda.
The peridium of the perithecia can possibly make a difference although photo-3 looks more like the one from A. sudermanniae but spores sizes do not reach the values as published for this species and remain in the lower range as for Ad. caballinum.

By the way the layers covering the neck (in case of photo-3) consist of long thick walled cells up to the ostiole and the lower neck area is covered with hyphen.


Joop
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Michel Delpont, 21-02-2021 17:13
Michel Delpont
Re : Arnium sudermanniae?
The last photos and measurements that you send in fact make think of caballinum; but also compares with inaequilaterale which spores with two germ pores while those of caballinum have only one pore. The latter also has asci widen at the summits.

Michel.