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20-07-2017 16:05

Castillo Joseba Castillo Joseba

En madera no identificada,   posiblemente  Fagus

18-07-2017 23:40

Elsa Sousa

Good evening,I found it on a stick of unknown tree

20-07-2017 14:19

Watt John

Il y a trois jours, j'ai trouve cet asco qui resse

20-07-2017 13:40

Ralf Dahlheuser Ralf Dahlheuser

I found this type for the first time and I want to

19-07-2017 13:11

Pintos Angel Pintos Angel

Hello anybody has:Microfungi occurring on the Prot

04-07-2014 11:33

Marja Pennanen

even on their dead leaves.Hi there,these beauties

18-07-2017 23:58

Luis Ballester Luis Ballester

Hola a todosWe have found this Peziza growing cesp

16-07-2017 00:24

Thorben Hülsewig

Hi there,today i was very suprised, because i foun

18-07-2017 19:59

Andgelo Mombert

Bonsoir,Un Trichopezizella sur Epilobium.Spores 10

17-07-2017 18:35

Andgelo Mombert

Bonjour à tous,Sur bois mort de Alnus albobetula,

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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...