Accès membres

Mot de passe perdu? S'inscrire

20-07-2012 16:25

Eduardo Benguría

Buenas tardesEste Hypoxylon está cogido en Teneri

02-02-2013 10:30

Nina Filippova

With the key in Nordic Macromycetes this specimen

02-02-2013 16:06

Gilbert MOYNE

Bonjour,Voici un petit Octospora qui me pose bien

03-02-2013 13:10

Ueli Graf Ueli Graf

Hallo, ich habe diesen Asco gestern gefunden auf e

03-02-2013 12:11

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.J'ai des soucis pour identifier ce Lampros

24-01-2013 22:39

Yannick Mourgues Yannick Mourgues

... mais qui a certainement fait trempette par acc

01-02-2013 09:36

Nina Filippova

This cups from pine bark fitted about with descrip

02-02-2013 20:01

Nina Filippova

First identified this specimen as Phaeohelotium no

01-02-2013 23:09

Salvador Tello

Hola.Este ascomiceto crecía en madera de Vitis vi

02-02-2013 18:25

Esquivel-Rios Eduardo

Hi all.I found this fungi in Erytrina dead wood: p

« < 1192 1193 1194 1195 1196 > »
Hypoxylon
Eduardo Benguría, 20-07-2012 16:25
Buenas tardes
Este Hypoxylon está cogido en Tenerife en bosque de laurisilva, probablemente en madera de Prunus lusitanica ssp. Hixa
Ascas de aprox. 100 µm con disco amiloide de 2.5x1 µm
Esporas de 9-11x4.5-5.5 µm de perfil simétrico y con hendidura germinativa de longitud similar al de la espora
Estroma con polvillo amarillo y con una reacción casi nula al KOH 10%, quizá un débil color púrpura
Estoy pensando en Hypoxylon carneum pero esas esporas casi rómbicas me despistan
¿Qué os parece?

Saludos,
Eduardo
  • message #19265
  • message #19265
Jacques Fournier, 20-07-2012 16:39
Jacques Fournier
Re : Hypoxylon
Hola Eduardo,
I agree with you it is not H. carneum and the shape of ascospores is most unusual. Many undescribed species of Hypoxylon occur in Canary islands and yours seems to be a good candidate. Can you send me a part of your collection, gently dried (not on a dryer) and wrapped in paper?
Thanks,
Jacques

My postal address is:
Jacques Fournier
Las Muros
09420 Rimont
France
Eduardo Benguría, 20-07-2012 17:20
Re : Hypoxylon
No hay problema Jacques, mañana te mando la muestra

Eduardo
Jacques Fournier, 14-10-2012 19:18
Jacques Fournier
Re : Hypoxylon
Hola Eduardo,
I eventually checked your Hypoxylon, sorry for the long delay. I am stil waiting for HPLC and cultural data but based on morphology everything fits well H. carneum.
I did not observe those rhomboid ascospores you mentionned, maybe they were tightly packed in an ascus and not well rehydrated, which may sometimes account  for such angular shapes. Take this as a prelimnary result, I will keep you informed when I have more data.
Cheers,
Jacques
Eduardo Benguría, 14-10-2012 20:32
Re : Hypoxylon
Hola Jacques:
Muchas gracias por esta información y esperaremos las noticias de HPLC para confirmar el probable H. carneum. Por mi parte, voy a volver a mirar las esporas con un tiempo bastante mayor de rehidratación

Saludos cordiales,
Eduardo
FELIPE SAN MARTÍN, 15-10-2012 18:49
FELIPE SAN MARTÃN
Re : Hypoxylon
La forma del estroma me recuerda una especie de Jumillera o de Whalleya. Pero hay que cultivarlo para ver el tipo de anamorfo.
Ver: Mycotaxon 64: 39-50. 1997.
Jacques Fournier, 15-10-2012 21:32
Jacques Fournier
Re : Hypoxylon
Hi Felipe,
the thinly effused stroma is indeed unusual and may remind of Whalleya but it does contain pale yellowish granules beneath surface, which sets it apart from both Whalleya and Jumillera.
Hope futher data will become available soon.
Jacques
Jacques Fournier, 04-02-2013 16:54
Jacques Fournier
Re : Hypoxylon
Hola Eduardo,
thanks for being so patient! I eventually received from Marc Stadler the HPLC results of your Hypoxylon sample, the profile fits perfectly H. carneum with presence carneic acids A and B.
I send you the analysis report in private.
Cheers,
Jacques