Accès membres

Mot de passe perdu? S'inscrire

29-12-2025 23:20

éric ROMERO éric ROMERO

Bonjour, Une récolte du mois d'août 2025 en tou

30-12-2025 16:44

Pascal Ducos

Bonjour,Une anamorphe rose stipitée, très nombre

30-12-2025 17:14

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous aider Albe

30-12-2025 15:31

Johan Boonefaes Johan Boonefaes

I found this unknown star form by the microscopy o

29-12-2025 10:15

Hulda Caroline Holte

Hello, I found and collected this propoloid ascom

30-12-2025 09:04

Josep Torres Josep Torres

Hello.A Pyrenomycete sprouting sparsely but very d

29-12-2025 17:44

Isabelle Charissou

Bonjour,J'aimerais savoir si d'autres personnes au

12-11-2021 00:03

Lepista Zacarias

Hi everybody,A week ago in my fiels trip I noticed

29-12-2025 17:51

Blasco Rafael Blasco Rafael

Hola, me pueden ayudar con esta muestra.Recogida s

29-12-2025 17:12

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

« < 1 2 3 4 5 > »
Rhytismatales on Ribes
Marja Pennanen, 15-07-2017 23:16
Hello forum,

I collected some hyaloscyphaceae on the leaves of Ribes nigrum. On stereomicroscope I noticed something growing on the stem of a leaf. Sorry about the quality of photos, should try again tomorrow.

The apos are about 0,5-1mmx0,5 mm and very hard to see because of the dark grey colour and are propably visible only, when wet.
The spores are about 7-9x2 and asci 50-60x6-8, Iki blue.
Paraphyses are practicly not exceeding the asci and may be a bit curved, about 2 at the top.

I suppose, that this is a representative of some Rhytismatales, but found absolutely nothing fitting to these characters. Maybe someone here can help me...

Marja
  • message #49680
  • message #49680
  • message #49680
  • message #49680
Hans-Otto Baral, 16-07-2017 07:35
Hans-Otto Baral
Re : Rhytismatales on Ribes
Hi Marja
can you exclude a Pyrenopeziza? Reminds me of P. petiolaris on Acer petioles.
Zotto
Marja Pennanen, 16-07-2017 13:59
Re : Rhytismatales on Ribes
Dear Zotto,

these definitely grow under surface.  They really are visible only, when wet. I took many more photos, but these seem to try to avoid to be revealed ;)

The paraphyses are curved at the top and septate and seems to exceed at least young asci.

Could this be a Hypoderma species?

Marja
  • message #49686
  • message #49686
  • message #49686
Hans-Otto Baral, 16-07-2017 21:02
Hans-Otto Baral
Re : Rhytismatales on Ribes
Now I see a strongly hooked paraphysis also in your first series of images which rules out my suggetsion. Sorry, the quality is too low. The paraphyses aren't multiguttulate?
Marja Pennanen, 17-07-2017 13:38
Re : Rhytismatales on Ribes
Hi Zotto,

I supposed, that there were septas in paraphyses, but they may as well be guttules. I have these drying now, so I should collect more, but have not time now. My granddaugter is going to visit us and I surely have to move many things away from her curious eyes and fingers...

Marja