Accès membres

Mot de passe perdu? S'inscrire

15-05-2024 17:26

Geopyxis sp.
Vasileios Kaounas Vasileios Kaounas

First time I find this season and in this habitat,

15-05-2024 10:54

Literature request
Viktorie Halasu Viktorie Halasu

Hello, would anyone have this paper please? I did

14-05-2024 19:48

Possible Hymenoscyphus menthae
B Shelbourne B Shelbourne

• Hymenoscyphus: Habitat, macro, spores, paraphy

10-05-2024 17:40

Nitschkia, no! It's a lichen
Anna Klos

Good afternoon, Thursday during an inventory we f

14-05-2024 09:19

Presentation about Orbilia
Hans-Otto Baral Hans-Otto Baral

Hi, I want to announce for next Sunday 17.00 middl

14-05-2024 21:43

Tubercularia vulgaris ?
Thierry Blondelle Thierry Blondelle

Bonjour,A côté de Hystérographium fraxini, ces

14-05-2024 09:50

On Populus
Yannick Mourgues Yannick Mourgues

Hi. Found on decorticated wod of Populus cf. alba

13-05-2024 12:48

Apiosporous pyrenomycete
Eduard Osieck

After eight years (*) I found the same apiosporous

11-05-2024 18:08

Possible Mollisia nervicola
B Shelbourne B Shelbourne

• Mollisia on tree leaves: On dead Quercus leave

12-05-2024 11:48

Hypoderma (?) sur Euphorbia hyberna
Michel Hairaud Michel Hairaud

Bonjour , Voici une récolte d'une Rhytismataceae

« < 1 2 3 4 5 > »
Psilachnum chrysostigmum
Savic Dragisa, 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?
  • message #28956
  • 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
Savic Dragisa, 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.
Savic Dragisa, 28-04-2014 13:31
Re : Psilachnum chrysostigmum
Yes, the second preparation I did with water, as you have recommended.