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11-04-2026 15:45

Article search - Octospora ithacaensis

Zuzana SochorovÃ¡ (EgertovÃ¡)

Zuzana Sochorová (Egertová)

Please, could anyone send me this paper?Moyne G.,

11-04-2026 13:34

Requesting help with Dasyscyphella sp. ID

Artem Ptukha

Hello, I am seeking assistance with the identific

11-04-2026 10:42

Castillo Joseba

Castillo Joseba

Me mandan el material de Galicia, España, recolec

11-04-2026 10:19

Bientôt, un nouveau livre important

Michel Hairaud

Michel Hairaud

Chers amis d'Ascofrance , voici une très bonne no

11-04-2026 10:10

An important new book

Michel Hairaud

Michel Hairaud

Dear Ascofrance members, here is some very good ne

10-04-2026 23:22

Pyreno on Phragmites australis

Gernot Friebes

Hi,ascospores are 1- to 3-septate, approximately

10-04-2026 15:51

Botrytis ficariarum & Peronospora ficariae?

William Slosse

William Slosse

Hello everyone, On 08/04/26, I found a growth sit

09-04-2026 15:25

Slerotinia verrucispora ???

Jac Gelderblom

On bare soil between mosses Ifound an asco I deter

09-04-2026 13:55

Small-spored "Diplodia" on broom (Cytisus scoparius) - Denmark

Thomas Læssøe

https://svampe.databasen.org/observations/10589176

09-04-2026 10:12

Melanosporalian on attached decayed wood on fallen Carpinus, Denmark - very long-necked

Thomas Læssøe

https://svampe.databasen.org/observations/10587061

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:

http://www.ascofrance.com/forum/52152/trichopezizella-rubroguttata-sur-polygonatum-multiflorum

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.

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.

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!