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02-12-2021 18:30

Khomenko Igor Khomenko Igor

Hi, this fall around Ottawa, ON, Canada I found a

03-12-2021 16:37

maurice pelissier maurice pelissier

Bonjour trouvé dans les Hautes Pyrénées sur un

03-12-2021 15:29

Chris Yeates Chris Yeates

Bonjour tous An Ascobolus sp. has appeared in som

23-09-2021 13:40

Björn Nordén

Hi all,Does anyone by any chance have The taxonom

02-12-2021 08:10

Viktorie Halasu Viktorie Halasu

Hello,I have here a large Mollisia (approx. 3 mm,

02-12-2021 12:45

Stephen Mifsud Stephen Mifsud

I was revising some past identifications and I wis

29-11-2021 17:39

François Bartholomeeusen

Good evening to all,After several microscopic exam

02-12-2021 10:29

Joop van der Lee Joop van der Lee

I am looking for the following documentation:Chala

01-12-2021 20:03

Bometon Javier Bometon Javier

Apotecios de hasta 12mm, copulados de joven, sesil

29-10-2021 20:54

Chris Yeates Chris Yeates

Bonsoir tous As part of my study of the fungi occ

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Chlorociboria on Fagus
Alex Akulov, 19-07-2011 09:12
Alex AkulovDear Friends
Can you tell me whether there are any environmental preferences of species Chlorociboria aeruginella, Ch. aeruginascens and Ch. aeruginosa? I would like to clarify for myself what same species from mentioned above are able to colonize wood of Fagus and cause its greening. I often find a timber devoid of fruiting bodies. Is it possible in this case to talk about any particular species name?

What other criteria besides the size of ascospores are important for these species delimitation?

At one of my samples I found ascospores the following sizes:
(12.3) 13,1-14,5 (15.3) x (2,0) 2,7-3,4. Could this be Chlorociboria aeruginella?

Grateful before,

Hans-Otto Baral, 19-07-2011 09:41
Hans-Otto Baral
Re : Chlorociboria on Fagus
Hi Alex

C. aeruginella is a species of herbaceous stems and leaves. On wood there is only aeruginascens and aeruginosa, which are indistinguishable from the green stain. But my data on substrate preferences say:

aeruginosa: Betula, Acer, ?Populus
aeruginascens: Quercus, Salix, Alnus, Carpinus, Fraxinus, Fagus, Laurus.

But Dixon gives also Betula for aeruginascens, and even conifers, and for aeruginosa? a very similar host spectrum.

Your spores perfectly fit to the more rare aeruginosa. Both species have short flexuous haurs but those of aeruginosa are warted, those of aeruginascens smooth.