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18-12-2025 21:17

Pol Debaenst

The identification took me to Byssonectria deformi

15-12-2025 07:09

Danny Newman Danny Newman

indet. Rutstroemiaceae sp. on unk. fallen leavesMc

19-12-2025 10:10

Patrice TANCHAUD

Bonjour, récolte réalisée en milieu dunaire, a

18-12-2025 17:23

Bruno Coué Bruno Coué

Bonjour,je serais heureux d'avoir votre avis sur c

18-12-2025 18:07

Margot en Geert Vullings

These plumes were found on rotten wood.They strong

17-12-2025 18:35

Michel Hairaud Michel Hairaud

Bonjour à tous/Hi to everyone I am passing along

21-11-2025 10:47

François Freléchoux François Freléchoux

Bonjour,Peut-être Mollisia palustris ?Trouvée su

15-12-2025 15:48

Danny Newman Danny Newman

Melanospora cf. lagenaria on old, rotting, fallen

15-12-2025 15:54

Johan Boonefaes Johan Boonefaes

Unknown anamorph found on the ground in coastal sa

15-12-2025 21:11

Hardware Tony Hardware Tony

Small clavate hairs, negative croziers and IKI bb

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Hymenoscyphus 270914 2002
Miguel Ángel Ribes, 04-02-2015 00:15
Miguel Ãngel RibesAnd the last Hymenoscyphus ... today

This nice yellow Hymenoscyphus, 2-3 mm, clearly stalked, was growing on a small branch of Fagus sylvaticus too, 27-IX-2014. I have no idea about it.

Asci 8-spores, euamyloid, Hymenoscyphus type, not sure about croziers, (110.1) 110.3 - 126.7 (140.4) x (7.2) 8.2 - 10.3 (10.4) µm; Me = 120.4 x 9.1 µm.
Spores elipsoidal-elongated with many medium-size guttules around the nucleus, (11.1) 12.6 - 16.2 (17.5) x (4.3) 4.8 - 5.6 (6.6) µm; Q = (2.0) 2.4 - 3.0 (3.3) ; N = 86; Me = 13.9 x 5.2 µm ; Qe = 2.7.
Paraphysis cylindrical, not enlaeged at apex, plenty of small VBs.
Ectal excipulum with textura prismatica, with external layer brown.
Subhymenium very dark-brown to black, ¿with crystals?
Medullar excipulum with textura intricata.
Margin with small, hialine and thin "hairs".

Thank you with your help.

Miguel Á. Ribes.
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Hans-Otto Baral, 04-02-2015 09:28
Hans-Otto Baral
Re : Hymenoscyphus 270914 2002
Clearly without croziers. Presently I have no idea!
Miguel Ángel Ribes, 04-02-2015 10:13
Miguel Ãngel Ribes
Re : Hymenoscyphus 270914 2002
Ups, another species without identification.

Do you think I must find in Hymenoscyphus or in other genus?

Thanks you.
Hans-Otto Baral, 04-02-2015 10:39
Hans-Otto Baral
Re : Hymenoscyphus 270914 2002
Clearly Hymenoscyphus and not Phaeohelotium. But the spores are not scutuloid. H. peruni has smaller spores and croziers, and another idea I do not have.
Miguel Ángel Ribes, 04-02-2015 11:15
Miguel Ãngel Ribes
Re : Hymenoscyphus 270914 2002
I will try to find something similar.

Thanks.
Hans-Otto Baral, 05-02-2015 12:25
Hans-Otto Baral
Re : Hymenoscyphus 270914 2002
I have now found a similar collection, it is in my folder
calyculus-subferrug. H-

This is from the MERCK project during 2004, AH 7405, on ?Juglans, studied by Ricardo galán and later by me.

I am not sure whether it has been sequenced. Your sample is really interesting, and maybe a sequence would bring us forward.

Zotto
Miguel Ángel Ribes, 05-02-2015 13:13
Miguel Ãngel Ribes
Re : Hymenoscyphus 270914 2002
Yes, really very similar.

Must I contact Ricardo for further information, do you want to do that, do you want I send you the sample ...?

Thank you.
Hans-Otto Baral, 05-02-2015 15:32
Hans-Otto Baral
Re : Hymenoscyphus 270914 2002
I am not sure if he remembers his collection. Even the colour of the apos is inknown to me.

But it could well be that he is interested in clarifying such things. Gonzalo Platas was the one who sequenced the cultures at that time, so this would also be a possibility to  come nearer. If there exists a sequence, then it would be especially nice to clarify yours also.

Ricardo's seems to be from Burgos, and yours from Guadarrama mts.?
Miguel Ángel Ribes, 05-02-2015 22:39
Miguel Ãngel Ribes
Re : Hymenoscyphus 270914 2002
Thank you one more time Zotto.

My collection is from Hayedo de Tejera Negra, Guadalajara. http://goo.gl/maps/vTJPb

Cheers