very interesting indeed!
The spores are two-celled and the perithecia polystichous, which makes this fungus unlikely a Xylariaceae. Like Alain I wonder if the apical apparatus is going to react with iodine.
 Such stromata with polystichous perithecia can be encountered in Boliniaceae. Can you make out a pore at any end of the spores? Observation in KOH may help to see a pore when it is inconspicuous.
Thanks for coming back with more details.
Cheers,
Jacques

Hola Plácido, Alain & Jacques ;-)

I found this this article where Vasylyeva changed Bolinia lutea to Camaropella:
http://www.fungaldiversity.org/fdp/sfdp/25-13.pdf
Also a key to Camaropella is given, but no such big spores in that genus...

Apiocamarops has two-celled spores, but soft whitish stroma... it looks different:
http://www.cybertruffle.org.uk/cyberliber/59350/0080/005/0738.htm

Saludos,
Raúl

Thank you Raul for helping us.
I just want to say that I loose a little my understandings in taxonomy with the first paper. For example, how is born the genus Camaropella ? I haven't the 1997-paper ot the author. Is there molecular study ? I need explanations.
Alain

Hola Alain, salia sobre madera de Eryca, no sobre musgo. El corte es vertical (adjunto otra foto). La reacción con Meltzer no he probado, si he probado con IKI y es débil (adjunto foto). He puesto Pyrenomataceae porque no tengo experiencia con este tipo de Ascos.

Hello Alain, was going out on wood of Eryca, not on moss. The court is vertical (I enclose another photo). The reaction with Meltzer I have not tried, if I have tried with IKI and it is weak (I enclose photo). I have put Pyrenomataceae because I have no experience with this type of Ascos.

thanks Iglesias,
the apical apparatus seems indeed amyloid. This character combined with two-celled brown  ascospores suggests affinities with Amphisphaeriaceae but I am not aware of any genus or species with such a stroma.
Can you send me a part of your collection, simply air dried for some days? Please do not mail it fresh in a plastic bag, it would arrive mouldy!

My address is

"Las Muros"
F 09420 Rimont

Cheers,
Jacques

Hola Jacques, miraré con KOH para aclarar algo si se puede.

Hello Jacques, I will look with KOH to clarify something if it can.

Alain tu devrais poser la question à l'auteur (auteuse?), elle seule connaît peut être la réponse.
Jacques

Gracias Raul, seguiremos mirando. Es de La Gomera de finales de noviembre.

De acuerdo Jacques, te envío un trozo.

Saludos

Salut Alain,
Si ça peut faire ton bonheur, le voilà !
Amitiés, Guy

Salut Guy,
Toujours aussi sympa et documenté !
Merci,
Alain

Adjunto foto micro en Meltzer y con KOH como pedía Jacques.

Hola Iglesias,

the microscopic features do resemble those of Amphisphaeria but no species with such a stroma is known occur in this genus.
Hope examination of your collection will help.
Jacques

El día 14 te he enviado una muestra.

Un saludo

I have sent to you a sample on Thursday 14.
 
 A greeting

Hola Placido,
first sorry for having mistaken your first name with your surname!
Upon careful examination of your specimen, the apical apparatus of asci does not react with iodine, neither in Lugol nor Melzer (photo 2). It just turns faintly greenish yellow, which may be amplified by taking or processing the photo, as it probably occurred in the photos you attached.
Moreover an unconspicuous pore can be seen at either the proximal or distal end, more easily on immature less pigmented spores (black arrows).
All microscopic characters fit quite well the genus Pseudovalsaria Spooner, currently placed in Boiliniaceae, but the superficial turbinate stromata of your collection are very different from the small immersed stromata encountered in the type species P. ferruginea and P. peckii.
Further studies are still needed but it might well be a new species in that genus.
Anyway a very nice find!
Feliz Navidad!
Jacques

Hola Jacques, las fotos de micro no están retocadas, me da la impresión en mis fotos que si reaccionan al Iodo, ¿quizás las tuyas no reaccionan por estar secas?
No tengo ninguna experiencia con el género Pseudovalsaria, si quieres algún dato más sobre nuestra recolección no tienes más que pedirmelo.

Un saludo y Feliz Navidad a todos,   Plácido

Hello Jacques, the photos of micro are not retouched, it gives me the impression in my photos that if they react to the Iodo: perhaps do not yours react for being dry?
 I do not have any experience with the genre Pseudovalsaria, if you want any fact more on our compilation you have only to ask me for it.
 
 A greeting and Happy Christmas to all,      Placido

Hola Placido,
I agree this is a bit troublesome. I can just suggest some possible explanations, most often the illumination of the microscope (too yellow) and/or the achromatic objectives account for artifacts in colours observed through the microscope.
The white balance settings of the digital camera may be also involved. I never observed variations in iodine reaction depending on fresh or dry state.
To see what a genuine blue amyloid reaction is, you should try with a specimen of Hypoxylon or Xylaria.

Cheers,

Jacques