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12-04-2026 17:56

Seeking genus for 1 – 3 septate spored asco. on herb Nepteta cataria (Mint).
Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

19-04-2026 20:46

Anamorphic fungus on plywood
Steve Clements

1 mm diameter approx spherical conidiophores on pl

17-04-2026 19:16

Small dark synnemata on rotten hardwood
Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Pyrenomycete with yellow subiculum on Aralia
Ethan Crenson

Hi all, A few weeks back a friend pointed out som

17-04-2026 15:14

sur feuilles de Luzula
Bruno Coué Bruno Coué

Bonjour.Récoltes du 16/04/2026, sur feuilles mort

12-04-2026 15:52

Anamorph on Salix
Gernot Friebes

Hi,I'm looking for help with this anamorph collect

14-04-2026 21:52

Thyriothecioid anamorph on Carex elata
Gernot Friebes

Hi,found on dead leaves of Carex elata. Conidia: 4

16-04-2026 22:09

Parorbiliopsis samarae?
Buckwheat Pete

Hello, I'd like to ask about this older specimen:

15-04-2026 19:33

Scutellinia cf. citrina
Fátima Durán Manzaneque

Hi!! I need help, I found this Ascomycete but I d

14-04-2026 20:31

Psilachnum lateritioalbum on Phragmites australis?
Gernot Friebes

Hi,can this be Psilachnum lateritioalbum on Phragm

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Hypocreales on old basidiomata of Trametes hirsuta
Ibai Olariaga Ibarguren, 21-04-2020 15:52
Hi,

I hope eveyone is OK.

I was wondering is come could provide a hint to be able to identify this fungus that grew on old basidiomata of Trametes hirsuta growing on a large lof of Fagus sylvatica. 

The perithecia were more or less globose, growing gregariously, glabrous, initially white and then pale pink, 80-160 µm in diametre.

The ascospores are subglobose to broadly ellipsoid, 1-septate, hyaline, thin-walled, 2.7-3.7 x 2.2 µm, not disarticulating. Asci unitunicate, clavate, with 8 uniseriate spores, approx. 21 x 4 µm. I did not see any hairs in peridial cells (if necessary, I can provide photos).

I have been looking in Hypocreales but did not find any species that looks even close. I would appreciate any help.

Thank you in advance and take care.

Cheers,

Ibai.
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Salvador Tello, 21-04-2020 22:10
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hola Ibai.

¿Realmente son Peritecios? ¿No podrían ser apotecios muy pequechos?
Tiene pinta de ser Hyalorbilia erythrostigma, que crece en otros hongos muertos.

Saludos.
Salvador.
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Ibai Olariaga Ibarguren, 22-04-2020 11:45
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hola Salvador,

gracias por tu idea. La verdad es que miré hace tiempo el material. Lo miraré otra vez por si pudieran ser apotecios, pero no lo creo. Al menos algunas esporas eran claramente septadas. Subiré más fotos pronto.

thanks for the idea. To be honest I looked at the material a long time ago. I will take a look at it again to check if they could be apothecia, but I do not think so. At least some spores were clearly septate. I will upload more pictures soon.

Saludos,

Ibai.
Ibai Olariaga Ibarguren, 22-04-2020 17:01
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hi again,

yes, they are definitely perithecia with a clear ostiole.

The asci have a very inconscicuous ascal apparatus, observed as two very small refractive dots at both sides of the apex.

There is an anamorphic state everywhere in my sample, I think it is Acremonium-like.

Any idea? I think it might belong either to Bionectriaceae, but I am not sure.

_____

Hola Salvador,

sí, son peritecios, son ascomas cerrados con un ostiolo apical. Los ascos tienen un aparato ascal muy rudimentario y visible levemente como dos puntos refringentes a cada lado del ápice del asco.

La muestra está completamente colonizada por un anamorfo de tipo Acremonium (creo), que podría ser suyo.

Saludos,

Ibai.
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Christian Lechat, 22-04-2020 18:05
Christian Lechat
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hi to all,

are the hyphal elements covering ascomatal wall smooth or spinulose?

All the best,

Christian
Ibai Olariaga Ibarguren, 22-04-2020 18:10
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hi Christian,

they are completely smooth, 2-3 µm, hyaline to pale yellow.

Thanks in advance.

Ibai.
Salvador Tello, 23-04-2020 14:27
Re : Hypocreales on old basidiomata of Trametes hirsuta
Sí, defintivamente son peritecios.
Solo me había parecido muy similar a Hyalorbilia erythrostigma y como no apreciaba bien los peritecios en la foto pensé que podrías haberte equivocaco. Pensé mal

Saludos.
Salvador.
Ibai Olariaga Ibarguren, 23-04-2020 14:47
Re : Hypocreales on old basidiomata of Trametes hirsuta
Era una propuesta muy razonable, ya que los ascos y las esporas se parecían mucho y la ecología coincidía. Pero tampoco había visto paráfisis.

Gracias por la aportación, no conocía H. erythrostigma, pero ahora ya sí :-)

Saludos,

Ibai.