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26-05-2018 21:42


Bonsoir à toutes et tous,Hier, j'ai trouvé à la

27-05-2018 08:49

Pintos Angel Pintos Angel

Hello, anybody has  Nag Raj TR, DiCosmo F. 1981.

25-05-2018 17:19

Valencia Lopez Francisco Javier

Hola todos/asAdjunto fotos de unos ascos recolecta

25-05-2018 21:39


Sur tige pourrie d'angélique sauvage, dans une ca

23-05-2018 22:26

Ueli Graf Ueli Graf

Bulletin : Lejeunia 2001 No.166 pp.13 pp. ref.20

20-05-2018 12:13

Rubén Martínez Gil Rubén Martínez Gil

Hola a todos. Subo unas fotos de una Ciboria que

23-05-2018 19:46


Trouvé récemment ce que je pense être un Urceol

22-05-2018 13:21

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y avellanos ... no he p

23-05-2018 19:32

Enrique Rubio Enrique Rubio

Hi againMinute semi-inmersed pseudothecia (up to 2

22-05-2018 13:19

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y avellanos,   la mad

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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...

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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.
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?

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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...