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13-09-2023 15:35

François Bartholomeeusen

Dear forum members, Under a pile of grass clippin

12-09-2023 16:59

Jean-Luc Ranger

Diamètre 5-6 mm, poils hyalins septés: 80- 150 Â

12-09-2023 09:16

Thomas Flammer

On a pinus cone I found some very small round Asco

10-09-2023 23:15

Patrice TANCHAUD

Bonsoir, apothécie de 10 mm récoltée sur le bo

06-09-2023 12:29

Margot en Geert Vullings

This Trichobolus found on rabbit dung. The length

08-09-2023 18:34

Luc Bailly Luc Bailly

Bonjour,Aisne, Durbuy, prov. Luxembourg, Belgique,

06-09-2023 21:45

Michel Hairaud Michel Hairaud

Bonsoir, Je ne trouve pas d'identité pour ce Mol

08-09-2023 17:56

Bernard CLESSE Bernard CLESSE

Un petit asco blanc sur capitule pourri et imbibÃ

08-09-2023 18:32

Bernard CLESSE Bernard CLESSE

Quelqu'un connaîtrait-il le nom de cet anamorphe

09-09-2023 11:31

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, for the purposes of my thesis, I try to ge

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Which Cladosporium is this?
François Bartholomeeusen, 13-09-2023 15:35
Dear forum members,

Under a pile of grass clippings (grass and herbs) I found several conidiomata. Under the microscope I found no conidiphores only loose conidia and hyphae.
The hyphae are brown and thick-walled, smooth or sometimes also verruculose and septated. The conidia are citriform with conidial hila and following dimensions: Me = 13.1 × 10 µm ; Qe = 1.3. First hyaline later black.

Would this belong to the genus Cladosporium and can anyone determine the species?


After two weeks I found Rhopalomyces magnus on the substrate so probably among the rotten grass is also dung.


All help is welcome!

Best regards,

François Bartholomeeusen

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Przemyslaw Drzewiecki, 13-09-2023 23:01
Re : Which Cladosporium is this?
Hello, It reminds me more of Chaetomium sp. ?
Regards Przemek
François Bartholomeeusen, 14-09-2023 11:51
Re : Which Cladosporium is this?
Thank you very much Przemek,

thanks to your help and the literature I found, I think I choose: Chaetomium elatum.
The spore dimensions and description seem correct: "limoniform, biapiculate or umbonate, bilaterally flattened, brown when mature, with an apical germ pore".
The description of the terminal hairs is also correct : "verrucose or warty, brown, erect or flexuous in the lower part, 2.5-4.5 ?m diam. near the base, repeatedly and dichotomously branched at right to nearly straight angles in the upper part, with relatively flexible, flexuous or undulate terminal branches".
In the attached photo, near the septum, I see something that looks like a crozier!

Best regards and thanks again,


François

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