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21-12-2006 18:36

Dmitry Gavryushin

Dec. 14, 2006, town park, Naro-Fominsk, Moscow reg

21-12-2006 18:32

Dmitry Gavryushin

Dec. 09, 2006, Naro-Fominsk, Moscow region, Russia

21-12-2006 18:26

Dmitry Gavryushin

Dec. 09, 2006, Naro-Fominsk, Moscow region, Russia

21-12-2006 18:23

Dmitry Gavryushin

Dec. 09, 2006, Naro-Fominsk, Moscow region, Russia

17-12-2006 21:02

Jean Pierre Dechaume Jean Pierre Dechaume

trouvé lle 17 12 2006, un "Geoglossum" à spore

16-12-2006 11:27

Jean Pierre Dechaume Jean Pierre Dechaume

trouvé en compagnie de Thuemenidium atropurpurea,

16-12-2006 09:23

michel hurtu

ci joint une espèce récoltée sur branche de feu

14-12-2006 10:11

Dmitry Gavryushin

Dec.05, 2006, our town park. Diameter 5 mm.

11-12-2006 21:10

Enrique Rubio Enrique Rubio

Je voudrais connaître une opinion sur ce Nectriac

10-12-2006 19:25

Enrique Rubio Enrique Rubio

Je voudrais connaître une opinion sur ce Dermatea

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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.