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31-12-2025 19:27

Spooren Marco Spooren Marco

Collected from loamy soil, at waterside (completel

29-12-2025 17:51

Blasco Rafael Blasco Rafael

Hola, me pueden ayudar con esta muestra.Recogida s

30-12-2025 16:44

Pascal Ducos

Bonjour,Une anamorphe rose stipitée, très nombre

29-12-2025 23:20

éric ROMERO éric ROMERO

Bonjour, Une récolte du mois d'août 2025 en tou

30-12-2025 17:14

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous aider Albe

30-12-2025 15:31

Johan Boonefaes Johan Boonefaes

I found this unknown star form by the microscopy o

29-12-2025 10:15

Hulda Caroline Holte

Hello, I found and collected this propoloid ascom

30-12-2025 09:04

Josep Torres Josep Torres

Hello.A Pyrenomycete sprouting sparsely but very d

29-12-2025 17:44

Isabelle Charissou

Bonjour,J'aimerais savoir si d'autres personnes au

12-11-2021 00:03

Lepista Zacarias

Hi everybody,A week ago in my fiels trip I noticed

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Cf. Paraleptosphaeria
Bernard Declercq, 10-10-2018 19:04
Bernard DeclercqHi to all,
Collected on branch of Rosa sp. in Switzerland:
Ascomata erumpent, globose, 0.8-0.9 mm diam., solitary to gregarious, blackish, coriaceous, apically ostiolate, roughened wall, with basal setae and numerous anchoring hyphae.
Asci cylindrical, bitunicate, 8-spored, up to 160x10-12 µm.
Spores fusiform, pointed ends, straight to slightly curved, 36-48x5-6.5(7) µm, 1-septate, slightly constricted at the septum, cell swollen close to the middle septum, guttulate, smooth, hyaline, becoming pale brown, finely verruculose and sometimes 3-septate.
Hamathecium of numerous filiform 1-2 µm diam. pseudoparaphyses.
Peridium with dark brown outer layers and hyaline inner layers of textura angularis.

Your help is welcome.

Bernard Declercq
  • message #54868
  • message #54868
  • message #54868
Mlcoch Patrik, 11-10-2018 11:57
Mlcoch Patrik
Re : Cf. Paraleptosphaeria
Hi, Bernard, 
This is very interesting collection, with Rosa is know only Leptosphaeria hazslinszkii, but it isn´t here. With the genus Paraleptosphaeria this can be only P. praetermissa, which growing on the Rubus and can also growth on another taxa with Rosaceae. Based to morphology of ascospores it belong to Leptosphaeria purpurea group. I don´t have to say, what it is, but I will like take to look on this your collection. Can you send me, please?