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15-12-2025 15:48

Danny Newman Danny Newman

Melanospora cf. lagenaria on old, rotting, fallen

15-12-2025 15:54

Johan Boonefaes Johan Boonefaes

Unknown anamorph found on the ground in coastal sa

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Hardware Tony Hardware Tony

Small clavate hairs, negative croziers and IKI bb

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Danny Newman Danny Newman

indet. Rutstroemiaceae sp. on unk. fallen leavesMc

15-12-2025 21:47

Pol Debaenst

Good evening, On 12/11/2025 I found ascomycetes w

15-12-2025 07:05

Danny Newman Danny Newman

Pseudosclerococcum golindoi (det: Zotto)near Cosb

15-12-2025 11:49

Danny Newman Danny Newman

ITS sequences from the following two collections B

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Danny Newman Danny Newman

indet. Rhytismataceae on oak leafnear Purchase Roa

09-12-2025 12:06

Andgelo Mombert Andgelo Mombert

Bonjour,Je recherche l'article concernant Hypobryo

13-12-2025 17:26

Buckwheat Pete

Hello everyone,I have a rather interesting ascomyc

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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