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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Hymenoscyphus on Rubus
Chris Yeates, 15-11-2021 16:37
Chris Yeates
Bonjour

Continuing my work on fungi on Rubus I recently collected a small section of dead Rubus fruticosus stem with three long-stalked Hymenoscyphus apothecia.

Under the microscope at x400 these looked like typical H. scutula (H- 19.2-22.5 x 4.4-5µm), though I could see no evidence of cilia. With oil at x1000 the usual cilia one might expect were not seen, but almost every ejected spore had 2 (occasionally 3) short projections, mostly at the "tail" end but also often at both ends. I managed to find something similar in Zotto's folder:

scutula - vitellinus H- > Hymenoscyphus scutula on Impatiens, 5.X.08.jpg

So this is not an unknown feature, I was interested, though, that this was not an occasional occurrence - with careful searching most (of many) spores showed this.

Chris
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Hans-Otto Baral, 15-11-2021 16:56
Hans-Otto Baral
Re : Hymenoscyphus on Rubus
Yes, this is nothing rare. Did you look for the ascus base? Surely without croziers I assume.

You can see them in my Hymenoscyphus menthae paper in H. macroguttatus (figs 32 33 36) and in a species on Vitis (62). In H. vitellinus they tended to be longer. This is quite a difficult group and requires DNA study.
Chris Yeates, 15-11-2021 18:22
Chris Yeates
Re : Hymenoscyphus on Rubus
Ah wie dumm von mir!


Thanks Zotto, and yes - as I think I said before - without croziers "H-"