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09-02-2025 22:51

Yanick BOULANGER

BonsoirEst-ce que quelqu'un peut me dire s'il s'ag

01-02-2025 20:32

Andreas Gminder Andreas Gminder

Hello,today my girlfriend Sylvie found a single ap

08-02-2025 18:48

Yanick BOULANGER

CistellaSur boisTrès petites apothécies (0.1 –

06-02-2025 18:11

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, while digging in my fungarium, I found an

07-02-2025 22:28

Yanick BOULANGER

BonsoirPetit pyrénomycètes d'environ 1 mm sur bo

07-02-2025 20:25

Enrique Rubio Enrique Rubio

Dear all.Ascomata pheritecioid, KOH-negative, flas

07-02-2025 17:48

Vasileios Kaounas Vasileios Kaounas

asci 170-200 x 20-22 ?m spores 21.9 [22.9 ; 23.4]

06-02-2025 06:25

Bharati Mandapati

Hi All, I would love some help with this Lasiobel

06-02-2025 19:28

Rot Bojan

Hello!On a fallen twig (possibly Corylus) I found

05-02-2025 04:38

Ethan Crenson

Hi all, Found by a friend last Saturday in Staten

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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