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02-12-2025 18:59

Malcolm  Greaves Malcolm Greaves

This pair of ascos 2.5cm across were on recently b

03-12-2025 20:02

Buckwheat Pete

Hello everyone, does anyone know the genus Godroni

02-12-2025 19:25

Buckwheat Pete

Hello, can anyone identify this hairy fungus growi

02-12-2025 14:28

Mirek Gryc

527 / 5 000Hello everyoneThey grew on dead shoots

30-11-2025 12:53

Edvin Johannesen Edvin Johannesen

White short-stipitate apothecia found on thin twig

30-11-2025 10:47

William Slosse William Slosse

I recently found a collection of small Peziza sp.

27-11-2025 12:01

Thomas Læssøe

https://svampe.databasen.org/observations/10496727

27-11-2025 11:46

Thomas Læssøe

https://svampe.databasen.org/observations/10493918

17-09-2025 10:50

Heather Merrylees

Hi there!I am hoping for any advice on the identif

29-11-2025 08:40

Andreas Millinger Andreas Millinger

Hello,on a splintered part of a branch on the grou

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Hymenoscyphus on Prunus padus
Marja Pennanen, 07-07-2012 14:51
Hi,

I have found this big Hymenoscyphus ealier two times, but only one fruitbody a time.
Then it grew on Ribes and propably on Salix.

These were even 5 mm wide.
The spores are about 15-20x4-5 and asci 90-130x8-9. Paraphyses may be a bit longer than asci.

Marja
  • message #19150
  • message #19150
Hans-Otto Baral, 07-07-2012 16:24
Hans-Otto Baral
Re : Hymenoscyphus on Prunus padus
Hi Marja

I think Hymenosc. calyculus

Zotto
Marja Pennanen, 07-07-2012 23:54
Re : Hymenoscyphus on Prunus padus
Dear Zotto,

I noticed, that one of H. calyculus synonyms is H. virgultorum.
I have found it many times and it has been yellow.
So it was no option for me in this case.
Some times I have noticed yellow and white Hymenoscyphuses on the same stem of a herb, but now this is a tree and the colours are quite different. How much can the colours of the same species vary (I know, that the size of Hymenoscyphuses can vary much depending of the substrate)? Is it a matter of the substrate (metabolism) or lack of light (because this and also the others were shadowed)?

Sorry Zotto, things like this raises questions in my mind and makes me curious...

Marja
Hans-Otto Baral, 08-07-2012 12:08
Hans-Otto Baral
Re : Hymenoscyphus on Prunus padus
Colour can actually vary, yes, and one reason may be light. But H. virgultorum I use for a species with very different spores, here attached. Spore asute, especially at the base, filled with small doplets. If anybody can argue against this interpretation I would be very interested.

Zotto
  • message #19161