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18-05-2022 09:10

Small asco on the edge of the bonfire?
Mirek Gryc

Hello everyoneA few days ago I found a small ascom

13-07-2022 10:48

Search for a paper from E. Müller
Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for the following paper:Mülle

13-07-2022 06:14

Yellowish brown Hymenoscyphus on herb
Juuso Äikäs

I inspected a boggy depression at the side of a fo

11-07-2022 15:32

A "gastroid" asexual (?) fungus on horse hoof cuttings incubated on soil - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10216745

12-07-2022 16:30

Gracilistilbella clavulata (syn. Stilbocrea gracilipes) anamorph
Riet van Oosten Riet van Oosten

Hello,Found in 2018 by Willy Heimeriks.Not many do

11-07-2022 10:11

Cream white operculate on Typha with globose, ridged-reticulate spores from Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10279374

12-07-2022 07:46

Small black and white fungus
Edouard Evangelisti Edouard Evangelisti

Dear all,I am wondering if you could advise on the

11-07-2022 18:41

Lachnum subvirgineum with blue/purple hymenium?
François Bartholomeeusen

Good evening to all,At the dried out edge of a swa

10-07-2022 16:57

Lachnum on Rubus.
Mirek Gryc

HiUnfortunately, I have a problem with the interpr

11-07-2022 09:50

Bull. trimest. Soc. mycol. Fr. 44
Hans-Otto Baral Hans-Otto Baral

Hello does someone have access to the following p

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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!