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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

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

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

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

Thomas Læssøe

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

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

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What on Alnus catkins?
Marja Pennanen, 04-09-2009 22:52
Fruitbodies 0,1 to 0, 3 mm wide.
Spores 9-2 x 2-3 and asci 60-75x8-9 micrometers.
Paraphyses 3-4 micrometers wide, bend and a little swollen on the top.
  • message #8932
Hans-Otto Baral, 04-09-2009 23:39
Hans-Otto Baral
Re:What on Alnus catkins?
Hi Marja

The micros (do you mean 9-12 for the spores?) might tell for Calycellina alniella, but the apothecia are a bit small. Did you look for the asci, are they constantly 8-spored? There exists a 4-spored species on Alnus catkins.

Any contents in the living paraphyses? Spore contents?

Zotto
Marja Pennanen, 05-09-2009 10:40
Re:What on Alnus catkins?
Greetings Zotto,
the asci are 8-spored, spores about 9-12x2-3 micrometers when fresh.
With my simple microscope I can't see more.
The fruitbody measurements are not very accurate, they are done with a ruler...

Marja from ascomycetes wonderland ;)
Hans-Otto Baral, 05-09-2009 12:58
Hans-Otto Baral
Re:What on Alnus catkins?
I usually also measure with a ruler, but not rarely I measure the apos on the photos because I mostly use a fix zoom.

So with 8-spored asci I would consider Calycellina alniella as probable, although the apothecia look not very typical. Without detailed microscopic images we cannto say more, sorry.

Zotto
Stip Helleman, 05-09-2009 20:10
Stip Helleman
Re:What on Alnus catkins?
Hi Marja,
Macroscopically it looks to me also not as Caycellina, i think about Allophylaria, there is a still undescribed species on Alnus catcins. Is the excipulum very gelatinised? (If you make a squash mount all the inner tissue is pushed out and the excipulum is persistent, see image)
Stip
  • message #8947