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12-03-2025 17:54

Scutellinia hyperborea?
Karl Soler Kinnerbäck

Hi all!Do you agree with Scutellinia hyperborea? P

06-06-2025 12:12

S. capillipes
Hans-Otto Baral Hans-Otto Baral

Dear all I want to ask you if you have any recent

01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

15-06-2025 21:39

Leptosphaeria cf.conoidea
éric ROMERO éric ROMERO

Bonjour à tous, Espèce récoltée sur une tige

14-06-2025 13:28

titre : Hypoxylon sur populus
Richard VALERI Richard VALERI

Bonjour à tous.Trouvé au sol, longuement résupi

13-06-2025 16:34

Strossmayeria-like on Fagus
Andgelo Mombert Andgelo Mombert

Bonjour,Un petit discomycète qui me résiste. Il

13-06-2025 19:57

Helvella
Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y avellanosEjemplar uni

12-06-2025 19:36

Lachnum sp. on Larix sp. cones
Rodríguez Borja Rodríguez Borja

Hi, I have got this collection hoping you can giv

13-06-2025 09:41

Aquatic ascomycete.
Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

12-06-2025 15:53

Arthoniales? Saccothecium-like
Viktorie Halasu Viktorie Halasu

Hello, I keep finding something with spores like

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Xylaria grex oxyacanthae
Enrique Rubio, 11-06-2015 20:36
Enrique Rubio

Hi to everybody and specially Jacques Fournier


Today we have examined these gregarious stromata up to 40 mm high growing on buried seeds of Cornus sanguinea or Crataegus monogyna. We don't know what the host is because they are living together and the stromata were growing under both trees.


After reading wonderfull Fournier's keys we are observing that our ascospores are greater: 12-16 x 5-7 versus 11-13 x 4.6-5.9 sec. Jacques. Also we have seen that collections on Cornus seeds can be greater. The question is:  There is some innovation on this matter?


 


Many thanks in advance

  • message #36523
  • message #36523
  • message #36523
Enrique Rubio, 23-06-2015 20:08
Enrique Rubio
Re : Xylaria grex oxyacanthae
Since in this place there were only one Cornus mixed with a Crategus one, we gathered carefully only those that were growing on Crategus seeds. The result was surprising because the spores of these stromata growing on Crategus seeds show smaller ascospores according to the typical Xylaria oxyacanthae.
  • message #36673
Jacques Fournier, 26-06-2015 15:25
Jacques Fournier
Re : Xylaria grex oxyacanthae
Hola Enrique,
your observations are very interesting and strongly suggest that the Xylaria on Cornus fruits has larger ascospores than the one on Crataegus, as previously observed on the material collected by Peter Welt. I hope that will be sorted out on molecular grounds but it can be expected these fruit-inhabiting species are phylogenetically very closely related (see also X. delitschii). I have no new information so far.
Saludos,
Jacques
Enrique Rubio, 26-06-2015 17:02
Enrique Rubio
Re : Xylaria grex oxyacanthae

HI Jacques


Welcome from the Antillas. I wish that you have found nice fungi.


Well, we will analyze both collections and I will keep you informed.


Thanks a lot, jacques