27-02-2016 12:20
Wolfgang von Brackel
Hello all,friends brought me a small pyrenomycete
26-02-2016 10:11
ACAR ismail
Hi all,On branch of Populus sp.,Ascospores 5-8,8x1
27-02-2016 17:18
Thorben HülsewigHi there,yesterday i found on pinecones this yell
27-11-2015 22:54
Stephen Martin
This is the first Calonectria that I am studying.
26-02-2016 12:55
Castillo Joseba
Este ejemplar en madera sin determinar, de unos
26-02-2016 20:45
Enrique Rubio
Hi again I'd like to know your opinion on this Ep
26-02-2016 10:58
Castillo Joseba
En rama de Cipres (Cupresus), ejemplar unicoMe p
25-02-2016 23:38
Bernard CLESSE
Bonsoir à tous,En observant des lichens sur vieux
Chaetosphaeria?
Wolfgang von Brackel,
27-02-2016 12:20
Hello all,friends brought me a small pyrenomycete on rotten wood of Pinus, appearing beige-brown when young and reddish black when old. Under the micriscope the wall is yellow (young) to deep orange (old). Of course I thought on a Nectriaceae, but it has long filiform pseudoparaphyses. Can Chaetosphaeria/Zignoella have such a coloured wall or what else could this be? Ascomata c. 175 µm diam., pseudoparaphyses c. 1 µm wide, unbranched, asci 50-60 x 7-8 µm, 8-spored, ascospores 16-20 x 4 µm, 4-celled, hyaline, smooth.
Javier Etayo,
28-02-2016 18:16
Re : Chaetosphaeria?
The habit and your description of paraphyses and spores could fit well with a Porina (lichen).
Wolfgang von Brackel,
28-02-2016 18:42
Re : Chaetosphaeria?
Thank you Javier! I did not think on a lichen, a thallus was not visible. But of course, maybe! I never looked at the colour of the wall of Porina. Wolfgang