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19-04-2026 21:23

Steve Clements

Bonjour, I found this anamorphic fungus on old pl

19-04-2026 20:46

Steve Clements

1 mm diameter approx spherical conidiophores on pl

12-04-2026 17:56

Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

17-04-2026 19:16

Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

17-04-2026 15:14

Bruno Coué Bruno Coué

Bonjour.Récoltes du 16/04/2026, sur feuilles mort

12-04-2026 15:52

Gernot Friebes

Hi,I'm looking for help with this anamorph collect

14-04-2026 21:52

Gernot Friebes

Hi,found on dead leaves of Carex elata. Conidia: 4

16-04-2026 22:09

Buckwheat Pete

Hello, I'd like to ask about this older specimen:

15-04-2026 19:33

Fátima Durán Manzaneque

Hi!! I need help, I found this Ascomycete but I d

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Psilachnum chrysostigmum
Dragiša Savic, 28-04-2014 09:52
On dead stem of Asplenium scolopendrium I found Psilachnum chrysostigmum (I think the determination is ok). Photo 1 and 2.
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?
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  • message #28956
  • message #28956
  • message #28956
Hans-Otto Baral, 28-04-2014 10:44
Hans-Otto Baral
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
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
Hans-Otto Baral
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.