Hypoxylon ? from Panama. - Forum ASCOFrance

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Hypoxylon ? from Panama.

Esquivel-Rios Eduardo, 23-07-2013 23:37

Este Xylariaceae encontrado en madera muerta tiene ascocarpos planos, discoides, o de forma irregular,con una base estromatica negra. No se observan ostiolos ni estructuras en la superficie, los ascos de 80 - 100 micras , ascosporos ovoides, guttulados, de color marron claro o hialinos, 7 - 9 x 11 - 12 micras. Tiene el color y forma de Daldinia pero una sola capa de peritecios alargados, como Hypoxylon.--- Alguien puede ayudar...?

Björn Wergen, 24-07-2013 09:49

Re : Hypoxylon ? from Panama.

Hi,

it more looks like a member of Boliniaceae than of Xylariaceae. I think it is Camarops sp., but I do not know the species.

regards,
björn

Jacques Fournier, 24-07-2013 16:39

Re : Hypoxylon ? from Panama.

Hi Eduardo,
very interesting find but too poor information to identify it. I think it is a peltate Hypoxylon, maybe H. nicaraguense or something close.
You have to record the KOH reaction of a portion of stromatal surface, make more accurate measurements of ascospores, record the length of their germ slit and the dehiscence of the perispore in 10% KOH.
If I am asking too much let it dry and send it to me, half a stroma will be enough.
Cheers
Jacques

Esquivel-Rios Eduardo, 24-07-2013 18:28

Re : Hypoxylon ? from Panama.

<body>Mandeme su direccion postal y le envio el especimen.

Jacques Fournier, 24-07-2013 19:18

Re : Hypoxylon ? from Panama.

you can send it now but I won't be back before late August. But be sure I will answer you!
Thanks,
Jacques

Jacques Fournier
Las Muros
F. 09420 Rimont
Francia

Jacques Fournier, 01-09-2013 19:24

Re : Hypoxylon ? from Panama.

Hola Eduardo,
todavia estoy esperando tu Hypoxylon!
Saludos,
Jacques

FELIPE SAN MARTÍN, 10-09-2013 19:45

Re : Hypoxylon ? from Panama.

Eduardo: Junto con esa especie de Hypoxylon hay una Camillea parecida a C. billabiata.

Jacques Fournier, 02-05-2014 15:32

Re : Hypoxylon ? from Panama.

Hola Eduardo,
it's a long way from Panama but I eventually received your specimens this morning...
This fungus is in very good condition and fits well H. polyporum (Starb.) Ju & Rogers based on its pale violet pigments in KOH and yellow brown ascospores with short germ slit and perispore indehiscent in KOH.
The other Hypoxylon is almost entirely immature but I managed to find some ascospores. They are typical of H. tortisporum Ju & Rogers, as is the olivaceous KOH reaction.
The last one on palm is Seynesia erumpens (Berk. & Curtis) Petr., a really distinctive taxon I had never seen before.
Gracias,
Jacques

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