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01-02-2023 10:30

Lothar Krieglsteiner Lothar Krieglsteiner

... on old herbaceous stem (likely Tropaeolum maju

01-02-2023 09:30

Lothar Krieglsteiner Lothar Krieglsteiner

.. 29.1.23 near Carrapateira (W-Coast of Algarve),

31-01-2023 17:07

Marja Pennanen

Hello folks, I have found these brown ones (~1cmx

01-02-2023 09:35

Lothar Krieglsteiner Lothar Krieglsteiner

... 29.3.23 near Carrapateira (W-Algarve, Portugal

31-01-2023 13:50

Savic Dragisa

Regards to allAn unusual finding, especially for m

31-01-2023 19:58

Nogueira Héctor

Hello!25/01/2023 Argañoso(León) SPAIN  Specime

29-01-2023 18:19

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous confirmer

28-01-2023 23:39

William Slosse William Slosse

Good evening everyone,I recently bred an Ascobolus

28-01-2023 22:17

Josep Torres Josep Torres

Hola.Unos pequeños apotecios de color amarillo y

24-01-2023 23:30

Josep Torres Josep Torres

Hola.Una Botryosphaeriaceae sobre la corteza de un

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Clusters of small fungi on bark of Alnus
Dmitry Gavryushin, 21-12-2006 18:36
Dec. 14, 2006, town park, Naro-Fominsk, Moscow region, Russia. Clusters projected from cracks in the bark, size up to 5 mm, separate fruitbodies around 0.5 mm across.
  • message #1158
Dmitry Gavryushin, 21-12-2006 18:37
Re:Clusters of small fungi on bark of Alnus
A more general view.
  • message #1159
Dmitry Gavryushin, 21-12-2006 18:38
Re:Clusters of small fungi on bark of Alnus
What I saw in the microscope (1).
  • message #1160
Dmitry Gavryushin, 21-12-2006 18:38
Re:Clusters of small fungi on bark of Alnus
What I saw in the microscope (2).
  • message #1161
Jacques Trimbach, 21-12-2006 21:15
Re:Clusters of small fungi on bark of Alnus
cf. Tympanis alnea
Dmitry Gavryushin, 21-12-2006 21:33
Re:Clusters of small fungi on bark of Alnus
Many thanks Jacques, I think you are quite right. I have also found out that it occurs on Duschekia fruticosa (Betulaceae) in Taimyr Peninsula (Checklist of fungi and lichenicolous fungi of the Russian Arctic, http://www.binran.ru/infsys/ra_fun/ ).
Hans-Otto Baral, 21-12-2006 22:42
Hans-Otto Baral
Re:Clusters of small fungi on bark of Alnus
Yes that´s a Tympanis. In the case you find living asci (in a section) then you see that the conidia are aggregated in 8 roundish balls in the upper half of the ascus, and so they are ejected. But when you kill the asci then this peculiar arrangement is completely distorted and the conidia fill the whole ascus.

Zotto
Dmitry Gavryushin, 22-12-2006 08:40
Re:Clusters of small fungi on bark of Alnus
Thanks a lot for your comment Zotto. It's said in Nordic Macromycetes that there's another sp. on Alnus, T. hysterioides, but I think it would be difficult to say whether it's T. alnea or T. hysterioides.
Hans-Otto Baral, 22-12-2006 22:18
Hans-Otto Baral
Re:Clusters of small fungi on bark of Alnus
Tympanis is a very difficult genus. The best paper I know is that from Ouelette & Pirozynski. To identify species it is necessary to study the ascospores from which the conidia emerge (septation, germ tubes), which are rather difficult to see within the premature asci - when asci are dead then only by staining.