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31-08-2025 17:32

Albotricha ou autre Lachnaceae ?
Michel Hairaud Michel Hairaud

Bonjour, Pas d'identité trouvée pour cette réc

31-08-2025 19:41

Svensk bot. Tidskr.
Enrique Rubio Enrique Rubio

Hi to someone.I need to download this issue of Sve

31-08-2025 14:34

Rutstroemia alnobetulae or not.
Thomas Flammer

I have found a Rutstroemia on abt. 2000 m on Alnus

29-08-2025 19:04

Yellow apothecia on cow dung without hairs - Cheilymenia spec.?
Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

30-08-2025 18:29

Rutstroemia
Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

28-08-2025 17:24

Literatur request J. Berthier, Typhula
Thomas Flammer

I know, that this is not the real topic of this fo

29-08-2025 05:16

Teleomorph of Dendrostilbella smaragdina ?
Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

24-08-2025 21:59

Podospora
Edmond POINTE Edmond POINTE

Bonsoir amis mycologues,Trouvé sur crottin de che

27-08-2025 12:02

On Abies alba macroscopically similar to Propolis sp.
Pavol Palo

Hello dear friendsI would like to ask for sharing

25-08-2025 17:37

Petit asco indéterminé
François Freléchoux François Freléchoux

Bonjour,Nous avons trouvé samedi dernier à l'ét

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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