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03-11-2024 17:36

B Shelbourne B Shelbourne

• Macro and habitat suggest Hymenoscyphus s.l.,

03-11-2024 07:27

Juuso Äikäs

This tiny (0.2 mm wide) brown cup fungus was growi

02-11-2024 16:34

B Shelbourne B Shelbourne

• Host suggests Sawadaea bicornis or Phyllactini

01-11-2024 14:54

Rot Bojan

Can someone tell me more about this mushroom pleas

31-10-2024 22:25

Karen Poulsen

Hello, On half weathered Betula leaf, I noticed t

31-10-2024 21:42

Karen Poulsen

Hello, On last year's pine needles on the ground

31-10-2024 04:07

Francois Guay Francois Guay

Last week, I found what appears to be an Amicodisc

28-10-2024 17:51

B Shelbourne B Shelbourne

• Macro and habitat suggest Hymenoscyphus s.l.,

24-10-2024 23:07

Patrice TANCHAUD

Bonsoir, récolte réalisée sous hêtres et chê

28-10-2024 23:30

Marc Detollenaere Marc Detollenaere

Dear Forum,I found some small fruit bodies of abou

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Orbilia cotoneastri?
Harald Homa, 08-10-2024 13:20
Harald HomaHello everyone!

Once again I came across an Orbilia and I would like to ask for help in identifying it


Place of discovery: Unbarked deciduous wood branch lying in the swamp in the dry inlet to the Loher Weiher pond on the Loher Tal loop (deciduous forest beech/oak plus floodplain woodland)
MTB: 5014,132 Date of discovery: 21/09/2024


Almost hyaline, yellow-isabellar-coloured fruiting body of approx. 800µm Ø, hymenium covered with a thin film;


Paraphyses cylindrical, mostly apically capitate; small, yellow-coloured globules visible in the basal area of the uppermost segment of the paraphyses; mostly
two septa in the basal area and there partly simply branched


Asci clavate, 8-spored, apically round or truncate, basally thinly elongated or h-shaped


Spores long-spindled, hyaline with barely recognisable, roundish spore body in the second third of the spores and some very small oil drops
5.9 [7.4 ; 8] 9.5 × 0.9 [1.2 ; 1.4] 1.7 µm
Q = 3.9 [5.6 ; 6.4] 8.1 ; N = 31 ; C = 95%
Me = 7.7 × 1.3 µm ; Qe = 6


In my identification attempt I ended up with Orbilia cotoneastri, but I am not convinced that this is correct.


I would be glad if someone could help me with the correct name of my find.


Best regards


Harald

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Hans-Otto Baral, 08-10-2024 17:46
Hans-Otto Baral
Re : Orbilia cotoneastri?
From the habitat I would consider O. luteorubella and O. rosea.

Regrettably your preparation shows only dead asci and spores. The spore body would be helpful, it should be very elongated, acute above, not globose as in O. cotoneastri.
Harald Homa, 08-10-2024 18:09
Harald Homa
Re : Orbilia cotoneastri?
It surprises me that the cells are dead, since I had prepared in water with addition of SDS.
At the moment I don't have the find or the microscope within reach, but I will contact you next week with new images that hopefully will help to clarify.

Thank you for the information and help


Best regards


Harald

Hans-Otto Baral, 09-10-2024 10:26
Hans-Otto Baral
Re : Orbilia cotoneastri?
SDS could be poisonous, I never tested.

Try pure water.