19-08-2013 12:55
Salvador TelloHola.Estos peritecios los encontré el 20 de enero
18-08-2013 11:10
Joop van der Lee
Found on rabbit dung,Fruitbody 0.95x0.73 mm, no ha
16-08-2013 23:56
wiam AbdulHello,I have found this fungus on goat dung, Cleis
16-08-2013 15:22
Alessio Pierotti
Someone can help me in the search of this article
16-08-2013 15:02
Joop van der Lee
Found on horse dung,Neck of fruitbody without rigi
16-08-2013 23:27
Joop van der Lee
Foound on horse dung.Neck of fruitbody covered wit
17-08-2013 00:26
Rubén Martínez-Gil
Hola a todos.Hoy he encontrado esta Tarzetta a ori
15-08-2013 23:31
Martin Bemmann
Dear friends,does someone have this paper?:Minter,
Hi to all,Found this fungus on wood (unknown) in Southeast Brazil.
I believe it is a Biscogniauxia species: no pigments in KOH, stromata carbonaceous, ascospores with conspicuous germ slit, growing on the bark (not on the wood itself).
I didn't have much time to work with this fungus, but I made some measurements of the ascospores: 11-12.5 x 6.5-7.5
I checked the paper of Ju et al. 1998 (Mycotaxon 66:1-98).
According to them, there are 5 species and 2 vars. (capnodes, capnodes var. Rumpens, capnodes var. Theissenii, communapertura, divergens, mediterranea and sinuosa) reported from Brazil, and using the key I reached B. capnodes, mainly because of the ascospores size and perithecia seldom sharing a commom ostiole.
Could someone confirm if I'm in the right path? I'm not familiar with this genus, in fact this is my first time dealing with it. :0)
P.S.: sorry for some bad photos.
Biscogniauxia-cf.-capnodes-0001.pdf
this is very likely B. capnodes.
A photo of a stroma in vertical section, just broken, would be very informative as to the size of perithecia, their shape and their arrangement, let alone the thickness of the stroma itself.
Cheers,
Jacques
Thank you very much for the help.
The perithecia are separated each other by a carbonaceous layer, i.e. locules with individual perithecia, easily removed, variable in size (up to 500 micra width and 600 high - a measured only few ones) and shape, most of them assuming a cordate shape.
I'm in doubt what do you mean with "let alone the thickness of the stroma itself" but I think that the photos have the information that you asked.
Thanks again,
Dartanha
Perithecial shape and arrangement fit well. B. capnodes.
It is not uncommon, you will find it again.
Best,
Jacques
Having the identity confirmed I also got the identification of a second fungus in the same sample: Pseudocosmospora joca, since according to Herrera et al 2013 (Mycologia 105:1285-307) Cosmospora-like growning on Biscogniauxia spp. were transferred to Pseudocosmospora, and P. joca is the only species known in this host. Next week I will post that fungus here.
Thank you very much.
All the best,
Dartanha