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14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-07-2025 17:34

Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

15-07-2025 13:27

Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

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Discomycet on leaves of Acer pseudoplatanus
Gernot Friebes, 06-10-2009 22:05
Hi,

I found the following discomycet on old, wet leaves of Acer pseudoplatanus (5.9.2009). I do not know why but I do not even come to a proper genus (the best genus I came across was Microscypha).
The apothecia were quite tough with a brown, somewhat appressed-hairy margin. The spores were 19-21 x 5 µm, the asci were 8-spored, IKI bb and without croziers. The paraphyses were up to 3 µm wide without any notably content. The hyphae at the margin were brownish incrustet.

Best wishes and many thanks
Gernot
  • message #9193
Gernot Friebes, 06-10-2009 22:06
Re:Discomycet on leaves of Acer pseudoplatanus
micros:

spores
asci in IKI
excipulum
  • message #9194
Hans-Otto Baral, 06-10-2009 22:13
Hans-Otto Baral
Re:Discomycet on leaves of Acer pseudoplatanus
Hi Gernot

the spores wre surely distinctly scutuloid and the leaves sceletonized. This is Hymenoscyphus vacini, also known as Lanzia vacini. Typical are the brownish striae on the exterior. Only on Acer.

here a specimen from around Munich.
Zotto
  • message #9195
Gernot Friebes, 06-10-2009 22:23
Re:Discomycet on leaves of Acer pseudoplatanus
Hi Zotto,

oh dear, I should have known that species. Anyway, thank you very much for the help and the nice pictures!
By the way, do you know what vacini means?

Best wishes,

Gernot
Hans-Otto Baral, 06-10-2009 22:30
Hans-Otto Baral
Re:Discomycet on leaves of Acer pseudoplatanus
It was the collector, V. Vacek.

Do you mean September or was it collected yesterday ? :-)

Zotto
Gernot Friebes, 06-10-2009 22:38
Re:Discomycet on leaves of Acer pseudoplatanus
thanks again!

I really mean September :)

Best wishes,

Gernot