Diaporthe fibrosa - Forum ASCOFrance

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Diaporthe fibrosa

Thomas Flammer, 25-02-2025 16:18

substrate: Hardwood, Rhamnus
breaking through bark with long Rostrum
Spore mass: 12.4 - 17.0 x 6.3 - 8.8 µm - Q: 1.72 - 2.01 (Ø LxB: 14.6 x 7.9 ØQ:1.8 N: 13)
Spore shape: like an 8, single-septated
Spore color: hyalin
Congo red: positiv

Viktorie Halasu, 25-02-2025 17:36

Re : Diaporthe inaequalis cf.

Hello,
do you have a photo of the whole branch or of the wood in cross-section? The bast reminds me on Rhamnus.
Viktorie

Thomas Flammer, 25-02-2025 20:04

Re : Diaporthe inaequalis cf.

Thanks a lot, yes I added each a picture of the cross section and the bark. Yes the wood looks in the cross section like Rhamnus, buckthorn. Diaporthe fibrosa?

Alain GARDIENNET, 27-02-2025 18:10

Re : Diaporthe fibrosa

Diaporthe fibrosa, ok.

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