26-02-2026 15:00
Castillo Joseba
Me mandan el material seco de Galicia, recolectada
24-02-2026 11:01
Gernot FriebesHi,found on a branch of Tilia, with conidia measur
23-02-2026 11:22
Thomas Læssøehttps://svampe.databasen.org/observations/10584971
29-11-2024 21:47
Yanick BOULANGERBonjourJ'avais un deuxième échantillon moins mat
07-02-2023 22:28
Ethan CrensonHello friends, On Sunday, in the southern part of
19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
19-02-2026 13:50
Margot en Geert VullingsWe found this collection on deciduous wood on 7-2-
Valsa, need help/literature
Björn Wergen,
12-12-2011 23:43
Hi again,yesterday I have found 2 species of the genus Valsa. To make this sure, it would be great if someone can give me a hint for literature about Valsa (and near related genera). Although Ellis&Ellis is not bad with pyrenos, the genus Valsa is shown only "rudimentary" (just a few descriptions).
Many many thanks for all the help.
regards,
björn
Chris Yeates,
14-12-2011 01:29
Re : Valsa, need help/literature
hi
I think the reason the coverage seems 'rudimentary' is because in the UK there are very few true Valsa species left on the list, and many of those rest on one or two old records; in addition many records of Valsa tend to be those of Cytospora anamorphs rather than the sexual stage
most Valsa species have been redisposed into other genera
I can offer A monograph of Valsa on hardwoods in North Americ?a by Linda Spielman (Canadian Journal of Botany Volume 63, pp. 1355-1377)
also, for near related genera, do you have Margaret Barr's The Diaporthales in North America? (Mycologia Memoir No. 7, 1978)?
best wishes
Chris
I think the reason the coverage seems 'rudimentary' is because in the UK there are very few true Valsa species left on the list, and many of those rest on one or two old records; in addition many records of Valsa tend to be those of Cytospora anamorphs rather than the sexual stage
most Valsa species have been redisposed into other genera
I can offer A monograph of Valsa on hardwoods in North Americ?a by Linda Spielman (Canadian Journal of Botany Volume 63, pp. 1355-1377)
also, for near related genera, do you have Margaret Barr's The Diaporthales in North America? (Mycologia Memoir No. 7, 1978)?
best wishes
Chris
Björn Wergen,
14-12-2011 10:04
Re : Valsa, need help/literature
Hi Chris,
many thanks for the offer, I am very interested in it. I do not know the first one, but I know Margaret Barr's Diaporthales. I just do not know if I have the work on my PC, I remember that I had found it somewhere on internet. (google books? internet archive?).
What means offer? Can you send me these documents? It would help a lot.
regards,
björn
many thanks for the offer, I am very interested in it. I do not know the first one, but I know Margaret Barr's Diaporthales. I just do not know if I have the work on my PC, I remember that I had found it somewhere on internet. (google books? internet archive?).
What means offer? Can you send me these documents? It would help a lot.
regards,
björn
Chris Yeates,
15-12-2011 02:39
Re : Valsa, need help/literature
Documents sent Björn
they are quite big files - let me know you have received them OK
mit den besten Wünschen
they are quite big files - let me know you have received them OK
mit den besten Wünschen
Chris
Gernot Friebes,
15-12-2011 07:44
Re : Valsa, need help/literature
Hi Chris,
could you please send me these papers too? Thanks!
Best wishes,
Gernot
could you please send me these papers too? Thanks!
Best wishes,
Gernot
Björn Wergen,
15-12-2011 09:31
Re : Valsa, need help/literature
Yes, I have received them. Now I am happy for the rest of the year, thank you for the christmas present, Chris :D
regards,
björn
regards,
björn
Chris Yeates,
15-12-2011 23:03
Re : Valsa, need help/literature
you should have them now, Gernot
best wishes
Chris
best wishes
Chris