27-06-2025 14:09
Åge OterhalsI found this pyrenomycetous fungi in mountain area
11-06-2025 16:26
Jason Karakehian
Hi everyone, I am looking for the following protol
23-06-2025 13:25
Enrique Rubio
I would like to hear your opinion on this Scutelli
25-06-2025 16:56
Philippe PELLICIERBonjour, pensez-vous que S. ceijpii soit le nom co
25-06-2025 16:25
Thomas FlammerMy first impression was sth like Rutstromeia, but
24-06-2025 22:29
Danny Newman
Hello AscoFrance, I have recently photographed, c
24-06-2025 14:00
Warre Van CaenegemI'm currently in Croatia doing fieldwork that is n
23-06-2025 04:03
Francois Guay
Hi, I found this tiny sulfur yellow asco growing o
22-06-2025 13:52
DirkW
Dear friends,anyone out there with this paper?:DOU
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.