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22-05-2026 14:44

minute Saccobolus from cow-dung (moist chamber from Portugal)
Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

23-05-2026 11:44

Coprophilous pyrenomycete wild boar dung
Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

25-05-2026 16:44

Ascomata under epidermis Carex
François Bartholomeeusen

Hi forum members,During an excursion organised by

25-05-2026 16:35

Anamorphe d'Hypomyces aurantius ? sous saule cendré (Salix cinerea)
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,J'ai trouvé récemment,

22-05-2026 13:29

Pseudophacidium ?necans on Vaccinium myrtillus
Gernot Friebes

Hi,I am curious to hear your opinion on this mater

23-05-2026 18:57

Mollisia scopiformis
Sylvie Le Goff

Bonjour à tousRécolté sur une branchette de Sal

23-05-2026 23:53

cf Godronia sp.
Moreno Miriam

Bonjour ! Je travaille sur mon mémoire de master

22-05-2026 21:35

A yellow synnemata (coremia) on wood
Steve Clements

Bonjour, I expected this find on old wood on our

22-05-2026 18:12

similar to Karstenia but iodine-negative - on Osmunda in moist chamber
Lothar Krieglsteiner Lothar Krieglsteiner

... in moist chamber from Portugal.As the fungus s

22-05-2026 20:08

tiny gray asco on Pinus strobus / moss
Ethan Crenson

Hello all,  Yesterday in NYC I was visiting an e

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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