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01-03-2021 17:01

Menno Boomsluiter

I was wondering, if any, what the status of Xylari

28-02-2021 20:18

Stefan Blaser

Hello everybody, I am not getting on with the fol

01-03-2021 18:33

Blasco Rafael Blasco Rafael

Hola, He encontrado estas muestras sobre Juglans

01-03-2021 17:21

Enrique Rubio Enrique Rubio

Hi againI have found small, rounded, gregarious, n

01-03-2021 11:28

Mirek Gryc

Hello everyone.The only thing I can say about it i

28-02-2021 17:30

Mirek Gryc

Hello everyoneAscomata grew on the trunk of broken

24-02-2021 10:09

Robin Pétermann Robin Pétermann

Bonjour !!J'ai trouvé ces tout petits pyrénos (0

28-02-2021 18:29

William Slosse William Slosse

Good evening everyone,I don't know if this topic f

23-02-2021 19:26

Lepista Zacarias

Dear all,Again with a specimen of Helvella, which

24-02-2021 11:59

Josep Torres Josep Torres

Hola.Unos diminutos ejemplares fotografiados sobre

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A small disco that bleeds when cut
Archie McAdam, 17-01-2021 18:24
The asco was a small greyish disco growing on the damp bark of a broadleaved tree which I thought was Alnus glutinosus which grew at the edge of a large pond surrounded by beech and oak trees as well.  The discs grew in ones and twos scattered across the bark.

A general view will show its appearance.  The remarkable feature of bleeding occurred when the fresh fruitbody was cut.  This does not happen when the dried specimen is cut nor when a rehydrated specimen is cut.

The disc was set upon a scanty subiculum of dark hyphae.

There were no hairs.

A dried and a rehydrated specimen were put into KOH.  There was no colour leakage to see with the dissecting microscope.

The asci were 53x4 ?m,  J+ in Melzer's reagent showing a tiny lenticular blue body.

The paraphyses were slender filiform, 1 ?m in diameter with a slightly broader tip.

The escipulum was made up of slightly angular cuboidal cells which stained dark in Melzer.  The edge cells were elliptical to clavate in shape.

A few loose spores were found, 7.7 x 1.5-2 ?m; while  spores inside asci measured 5.9-6.5x1.5
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Hans-Otto Baral, 17-01-2021 20:30
Hans-Otto Baral
Re : A small disco that bleeds when cut
Where are you from? Regrettably the micros are in dead state, except for spores. So it is impossible to say if it is a Mollisia or not. But the red colour is strange.

So you see this red colour is confined to fresh specimens, as are many microscopic features. I fear you do not have it fresh anymore?
Archie McAdam, 17-01-2021 22:41
Re : A small disco that bleeds when cut
Sorry I did not say that I found it in a public park near Bingley, Bradford, England.  It is ages since I did find it - on 21 June 2018.  The red colour was confined to the fresh, cut specimen.  When I examined it fresh in water I saw no colour in asci or paraphses.  I do have a dried specimen which did remind me of a Molissia.

Thank you for looking at it.
Hans-Otto Baral, 18-01-2021 07:59
Hans-Otto Baral
Re : A small disco that bleeds when cut
This would be really interesting to recollect and study from the living tissues.
Archie McAdam, 18-01-2021 11:58
Re : A small disco that bleeds when cut
I shall certainly go back again after shut down when I am brave enough to venture so far.  And I shall tell you if I find it.

Many thanks for your help

Archie