23-10-2025 20:59
Patrice TANCHAUDBonsoir, est-ce que quelqu'un posséderait un com
20-10-2025 09:36
Nicolas VAN VOOREN
Hello.I'm searching for the following article:Bene
21-10-2025 23:13
F. JAVIER BALDA JAUREGUIHello to everyone.Did you think it could, be a pyx
22-10-2025 14:45
Lukas VerboomDear all,I collected this in the Netherlands, on t
22-10-2025 11:13
Jean-Luc RangerBonjour, Petites boules plus ou moins sphériqu
21-10-2025 21:25
Philippe PELLICIERBonjour,J'ai récolté en septembre sur une litiè
17-10-2025 18:45
Riet van Oosten
Hello, Found by Laurens van der Linde, Oct. 2025.
21-10-2025 21:34
Margot en Geert VullingsThis cup fungus was found on the ground in a damp
Clusters of small fungi on bark of Alnus
Dmitry Gavryushin,
21-12-2006 18:36
Dmitry Gavryushin,
21-12-2006 18:37
Re:Clusters of small fungi on bark of Alnus
A more general view.
Dmitry Gavryushin,
21-12-2006 18:38
Re:Clusters of small fungi on bark of Alnus
What I saw in the microscope (1).
Dmitry Gavryushin,
21-12-2006 18:38
Re:Clusters of small fungi on bark of Alnus
What I saw in the microscope (2).
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
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
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
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.