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Mot de passe perdu? S'inscrire

23-10-2025 20:59

Spores Aleuria cestrica & luteonitens
Patrice TANCHAUD

Bonsoir, est-ce que quelqu'un posséderait un com

24-10-2025 14:50

anamorph and teleomorph Apiospora
Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, Oct. 2025

24-10-2025 03:11

Unidentified asco on decaying wood
Francois Guay Francois Guay

I found this fungus growing on decaying conifer wo

20-10-2025 09:36

Searching for an article, Benedix 1962
Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for the following article:Bene

07-09-2025 08:19

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

21-10-2025 23:13

Pyxidiophora
F. JAVIER BALDA JAUREGUI

Hello to everyone.Did you think it could, be a pyx

22-10-2025 06:43

Orbilia...
Ethan Crenson

Hi all, I'm having some difficulty with this Orbi

22-10-2025 14:45

Dactylospora stygia?
Lukas Verboom

Dear all,I collected this in the Netherlands, on t

22-10-2025 11:13

Champignon stade imparfait
Jean-Luc Ranger

Bonjour,  Petites boules plus ou moins sphériqu

21-10-2025 21:25

Ombrophila morthieriana var. megalospora
Philippe PELLICIER

Bonjour,J'ai récolté en septembre sur une litiè

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Trichopezizella with Helicogonium endoparasite?
Edvin Johannesen, 04-08-2021 23:16
Edvin Johannesen
Hi!

I suspect I have a Trichopezizella with a hymenial parasite very similar to what was discussed here:


This one grows on dead Reynoutria japonica stems in Western Norway.

I think the asci (IKI-) have croziers and belong to the parasite (if I'm right in that there is one). The ascospores pinch off conidia at the terminal end. There are loads of conidia, but relatively few primary ascospores.  Paraphyses lanceolate. Hairs with yellowish-orange chrystals at the tips. Is it possible to say if this is T. rubroguttata or T. nidulus? Is the parasite (again IF) a Helicogonium?

Opinions greatly appreciated.

Cheers.
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Edvin Johannesen, 04-08-2021 23:17
Edvin Johannesen
Re : Trichopezizella with Helicogonium endoparasite?
And ascospores and conidia (last two in phase contrast).

All images in water.
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Hans-Otto Baral, 05-08-2021 11:16
Hans-Otto Baral
Re : Trichopezizella with Helicogonium endoparasite?
Yes it is clearly Helicogonium! You can try my key but it will be difficult. I cnanot remember such a host, but not sure.
Edvin Johannesen, 05-08-2021 11:41
Edvin Johannesen
Re : Trichopezizella with Helicogonium endoparasite?
Thanks, Zotto. I don't have your key - is it the one in Nova Hedwigia 69: 1-71? When you say you don't remember the host, are you referring to Trichopezizella as host for the Helicogonium or Reynoutria as host for the Trichopezizella? Finally, do you think this is T. rubroguttata or T. nidulus (what are the differences)?
Hans-Otto Baral, 05-08-2021 11:53
Hans-Otto Baral
Re : Trichopezizella with Helicogonium endoparasite?
I meant the host Trichopezizella.

It is the nova hedwigia paper, yes.

All what is not on Polygonatum is T. rubroguttata, but there exist populations with H+ and H-, maybe two different species.
Edvin Johannesen, 05-08-2021 12:02
Edvin Johannesen
Re : Trichopezizella with Helicogonium endoparasite?
Thanks a lot! (Sorry, but what do you mean by H+/H-?)
Hans-Otto Baral, 05-08-2021 12:26
Hans-Otto Baral
Re : Trichopezizella with Helicogonium endoparasite?
H+ = with croziers (Haken)
Edvin Johannesen, 05-08-2021 12:31
Edvin Johannesen
Re : Trichopezizella with Helicogonium endoparasite?
Cheers!