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03-02-2026 20:44

Zetti Mario

When I first saw this white mould on an Agaricus s

18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

30-01-2026 22:49

éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

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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