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08-11-2024 17:36

Juuso Äikäs

Recently I posted here my finding of small white a

04-11-2024 17:32

Yves Antoinette

Bonjour, je pense qu'il peut s'agir de Trichoderma

08-11-2024 16:54

David Chapados David Chapados

Hi, I'm looking for help to identify this specime

08-11-2024 15:44

Laurent LENEL Laurent LENEL

Bonjour à tous, ma découverte du jour, une Helve

23-10-2024 17:27

Enrique Rubio Enrique Rubio

Hi againThese tiny apothecia (100-200 µm) were gr

06-11-2024 20:07

B Shelbourne B Shelbourne

• Macro and habitat suggest Hymenoscyphus s.l.,

04-09-2024 21:02

Stephen Mifsud Stephen Mifsud

I have found an interesting Xylaria growing on fal

06-11-2024 11:59

Stephen Mifsud Stephen Mifsud

I am trying to identify a Cheilymenia sp. using ke

05-11-2024 18:00

Karen Poulsen

Hello, Can anyone help with this one? On twigs o

20-10-2024 16:48

Albert Meek

Globose sporesca. 16um, with  many drops. On bare

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On Populus leaves
Enrique Rubio, 21-04-2022 12:10
Enrique RubioCan you think of any ideas that might help me with this pyrenomycete that forms minute blackish, subsuperficial, gregarious, more or less roundish, glabrous, not setose ascomata on leaves of Populus nigra?
My first idea was Mycosphaerella, but I can't find any populicolous species that fits well to its characters. The Ascospores are hyaline and do not appear to change colour, at least at this stage of maturation.
Many thanks again
  • message #72514
Bernard Declercq, 26-04-2022 09:37
Bernard Declercq
Re : On Populus leaves
Hi Enrique,

maybe Cladosporium allicinum (Fr.: Fr.) Bensch, U. Braun & Crous, which has saccate asci en ascospores with biguttulate hemispores. This species seems to occur on all kind of substrates.

Best regards,
Bernard
Enrique Rubio, 26-04-2022 10:51
Enrique Rubio
Re : On Populus leaves
Hi Bernard
Although these are difficult fungi, your proposal seems quite good even without knowing the asexual morph.
Many thanks