28-04-2014 09:52
Dragiša SavicOn dead stem of Asplenium scolopendrium I found Ps
23-04-2014 22:29
Ralph Vandiest
Hello,I found these black small frb on leaves of
27-04-2014 06:48
Arold Lavoie
Bonjour,J'aimerrais savoir si selon vous, il s'agi
25-04-2014 17:11
M Jonathan
Sur populus tremuloides.Spores 16-20*6-7 u. asque
26-04-2014 12:05
Alessio Pierotti
Someone have the description of Lichenopeltella am
07-04-2014 02:06
M Jonathan
je m'attend pas à un nom , mais un genre serait a
Psilachnum chrysostigmum
Dragiša Savic,
28-04-2014 09:52
Similar type I found on the stem of Dryopteris filix-mas, photo 3 and 4.
The size of the spores is the same, 5.55 x 1.55
Is it the same or not?
Hans-Otto Baral,
28-04-2014 10:44
Re : Psilachnum chrysostigmum
There are two very close species or varieties, P. chrysostigmum var. versicolor on A. scolopendrium, and P. chrysostigmum var. chr. on various ferns but apparently never on A. scolopendrium.
The difference lies mainly in the guttules in the spores, but you need free living spores to see that.
Zotto
The difference lies mainly in the guttules in the spores, but you need free living spores to see that.
Zotto
Dragiša Savic,
28-04-2014 13:13
Re : Psilachnum chrysostigmum
Thanks Zotto, but this is the maximum of my microscope.
Hans-Otto Baral,
28-04-2014 13:21
Re : Psilachnum chrysostigmum
Not a matter of resolution. The asci and spores of the left specimen are dead, those of the right are living. In the spores of the latter I can see that minute drops are at the ends of the spores. In the former I cannot decide.
Dragiša Savic,
28-04-2014 13:31
Re : Psilachnum chrysostigmum
Yes, the second preparation I did with water, as you have recommended.