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16-07-2024 18:32
![Andgelo Mombert](/uploads/user_vgn/Mombert-0001.jpg)
Bonsoir, Un discomycète sur Liochlaena lanceolat
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17-07-2024 16:29
![Andgelo Mombert](/uploads/user_vgn/Mombert-0001.jpg)
Hello,A colleague found an unknown fungus on the s
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11-01-2022 16:36
Hi does anyone have a digital copy of Raitviir A (
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24-08-2020 13:00
![Yulia Lytvynenko](/uploads/user_vgn/Lytvynenko-0001.jpg)
Dear friends.Looking for a copy of the following w
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11-07-2024 14:29
![Viktorie Halasu](/uploads/user_vgn/Halasu-0001.jpg)
Hello, a thin-fleshed Mollisia on a monocot stem
![Miguel Ãngel Ribes](/uploads/user_vgn/Ribes-0001.jpg)
El día 7/6/2023 encontré en Tenerife este Pyrenomycete bastante carbonáceo, muy pequeño, de 200-300 micras de diámetro, sobre madera de brezo (Erica arborea) o faya (Myrica faya). Las ascas tienen un pie larguísimo, son IKI- y tienen 8 esporas cilíndrico alantoides con una gútula oscura en cada extremo. No he visto paráfisis, y en su lugar hay una masa de hifas con terminaciones muy refringentes, sobre todo en IKI.
Medidas de las ascas:
(80,6) 95,3 - 136,2 (163,4) × (4,3) 5 - 6 (6,3) µm
N = 18; Me = 115,2 × 5,4 µm ; Qe = 21,7
Medidas de las esporas (Medidas de punta a punta, no siguiendo la curvatura):
(5,6) 6,2 - 8,4 (8,8) × (1,3) 1,5 - 2 (2,2) µm
Q = (2,9) 3,4 - 5,1 (5,7) ; N = 45
Me = 7,3 × 1,8 µm ; Qe = 4,2
En Canarias están citadas Eutypella canariensis, E. euphorbiae y E. leprosa. De las 2 primeras prácticamente no hay documentación, y la tercera no se parece.
Gracias por vuestra ayuda.
Miguel Á. Ribes
![Jacques Fournier](/uploads/user_vgn/Fournier-0001.jpg)
In Diatrypaceae, the morphology of the stroma is essential to the genus placement.
Regularly spaced single perithecia suggest Eutypa rather than Eutypella in which several perithecia are collectively erumpent though a common disc, with more or less prominent ostioles.
I don't see ostioles on your photos and it's only a guess that the small protuberances are not ostioles but perhaps superficial parasites, or maybe pycnidia. The hemispherical superficial part should be elucidated by sections in close-up to assess whether it is an ostiolar structure or what else.
Photos 6-7-8 recall a possible libertella-like asexual morph, I wonder if it comes from the perithecial contents or from the superficial pycnidia.
Your collection is really worth a thorough study.
Good luck!
Jacques
![Miguel Ãngel Ribes](/uploads/user_vgn/Ribes-0001.jpg)
Interesting, two mushrooms in one.
Indeed, in the cuts that I have made I have not seen ostioles. I will try to make cuts and photos with more magnification of the superficial bumps that cover the perithecia. I will also try to take photos of the structure of the perithecia, although they were quite carbonaceous. All the micro photos that I have sent correspond to the interior of the perithecia that are seen at the bottom of the macro photos with cuts that I have sent, that is, the asci that I show and the possible libertella-like asexual morph of photos 6 -8 are of the same origin, from the interior of the perithecia, with complete certainty.
When I have more information I will send it again.
Thanks for your help Jacques. A hug.
![Miguel Ãngel Ribes](/uploads/user_vgn/Ribes-0001.jpg)
In this message I send more photos of the Eutypa (and the Berlesiella on top), to see if it can be identified with this, and in the next message I send data on the Berlesiella.
Perithecia: 480 x 330 microns (height x width)
Miguel Á. Ribes
Parece Capronia nigerrima, antes Berlesiella, un parásito común sobre estromas de Eutypa.
Un abrazo.
![Miguel Ãngel Ribes](/uploads/user_vgn/Ribes-0001.jpg)
Con la clave de Gernot Friebes (2012) llego a esa especie. Ya he visto tus láminas.
Muchas gracias. Un abrazo.