Accès membres

Mot de passe perdu? S'inscrire

16-09-2025 12:53

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

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Hysterium on Alnus
Mirek Gryc, 03-11-2021 13:52
Hello all
Ascomata grew on Alnus trunk, deprived of bark. A clear discoloration of wood visible in the place of their growth.

However, I have a question about the observed discoloration in the slit of Ascomata under the influence of iodine (Lugol). In the area of the gap a fairly clear blue color occurred (I showed in the pictures). Is this discoloration typical for this species? I did not meet with such information.
Spores:
(20.8) 21.1 - 23.8 (24) × (7) 7.2 - 7.88 (7.9) µm
Q = (2.6) 2.7 - 3.2; N = 12
Me = 22.1 × 7.6 µm; QE = 2.9

regards
Mirek

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Peter Püwert, 03-11-2021 16:12
Peter Püwert
Re : Hysterium on Alnus
Hi, looks like Hysterium pulicare, frequent on different wood or the bark, mostly on Betula and Quercus.

Regards Peter.