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28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

30-06-2025 06:57

Ethan Crenson

Hi all, Another find by a friend yesterday in Bro

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White anamorph with subulate spines
Marc Detollenaere, 08-12-2020 20:01
Marc Detollenaere

Good evening Forum,


I'd like to ask your help for an  anamorph looking as densely grouped subulate spines on the bark of Acer.


Under the microscope I found 1-septate hyaline conidia of 8x2.6 to 9.4x3.4µ pointed at one end.

  • message #66379
  • message #66379
  • message #66379
Enrique Rubio, 08-12-2020 20:11
Enrique Rubio
Re : White anamorph with subulate spines
The enigmatic Isaria friesii?
Guy Marson, 08-12-2020 20:53
Re : White anamorph with subulate spines
Hello Marc,

You should mark the branches colonized by the fungus in the field and keep an eye on them, because in a few weeks (depending on the weather, not until spring), the strongly gelatinous apothecia of a cream-colored Calloriopsis sp. will develop in the middle of the pycnidia. Have fun with the observations.

Cheers, 
Guy

Marc Detollenaere, 08-12-2020 22:27
Marc Detollenaere
Re : White anamorph with subulate spines

You're right Enrique.


I didn't know it was such a mysterious species.


Thank you very much

Marc Detollenaere, 08-12-2020 22:29
Marc Detollenaere
Re : White anamorph with subulate spines

Thank you for the suggestion Guy. I will certainly follow it closely


Marc

Hans-Otto Baral, 09-12-2020 10:13
Hans-Otto Baral
Re : White anamorph with subulate spines
I am exploring the distribution of this species and would like to note the collection data od this.

The identity of Isaria friesii is not ascertained, hopefully type material will be found.

Zotto
Enrique Rubio, 09-12-2020 11:27
Enrique Rubio
Re : White anamorph with subulate spines
It will not be easy. My friend Angel Pintos looked for the Montagne's typus in Paris, but it had been borrowed and not returned.
  • message #66386
Hans-Otto Baral, 09-12-2020 11:53
Hans-Otto Baral
Re : White anamorph with subulate spines
Oh, this is an important info. I imagined that loans from PC are now dificult. But what was the case here, who borrowed it and did not return, van der Aa?

Could you please send me the photo by mail?
Martin Bemmann, 09-12-2020 12:36
Martin Bemmann
Re : White anamorph with subulate spines
no, the name is J.A. von Arx....
Hans-Otto Baral, 09-12-2020 12:50
Hans-Otto Baral
Re : White anamorph with subulate spines
Yes :-)
Eduard Osieck, 09-12-2020 12:52
Re : White anamorph with subulate spines
Hi to all,
I recently collected this mysterious fungus (ana & teleo) again on Salix twigs from a tree. This time no obvious association with a pyrenomycete (location the same as my earlier collection reported on this forum).

Interesting to learn that Von Arx has examined the type. Would it make sense to ask somebody at the Westerdijk Institute (formerly CBS, Von Arx worked there for a long time) whether they know anything about this particular type specimen or the study involved? The fungus has already been sequenced?

Eduard
Hans-Otto Baral, 09-12-2020 13:09
Hans-Otto Baral
Re : White anamorph with subulate spines
Yes, there are two sequences in GenBank gained by Guy (each with ITS and LSU):

MF322774 and MF322776.

The source information is unclear, however: in both it is given to include both anamorph and teleomorph. Of course, this is rather improbable, I assume Guy took the PCR specifically from either of them.

Also the substrate in the second sequence is ambiguously stated as Cornus and Fraxinus, which cannot be true, the sequence comes from one of them, but which?

Two further sequences from Cornus are not uploaded, and agin it is unclear if they come from ana- or teleomorph.

Hope Guy can clarify all this.

When trying a phylogenetic analysis the fungus clustered strongly supported with Gyalidea and Corticifraga/Actinoplaca (Ostropales).

Zotto