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19-08-2022 22:26

Juuso Äikäs

A few years ago I found a group of olive-brown fru

19-08-2022 19:05

Stefan Jakobsson

On a petiole of a leaf of what seems to be Populus

09-08-2022 20:06

Stephen Mifsud Stephen Mifsud

I have found an interesting aspergillus on flowers

13-08-2022 17:18

Stephen Mifsud Stephen Mifsud

I assumed these are weak colonies of Neurospora on

18-08-2022 17:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283042

10-08-2022 15:45

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

02-08-2022 17:48

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

16-08-2022 20:07

Bernard Declercq Bernard Declercq

Good evening,Who could be so kind to supply me fol

07-01-2014 23:04

Michel Hairaud Michel Hairaud

Bonjour à tous, Hi to all. This tiny bright yell

16-08-2022 15:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283169

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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.
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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