12-02-2016 12:47
Luc Bailly
Bonjour à tous, Bellecombe, Termignon, Vanoise,
11-02-2016 17:27
Jac GelderblomSur bois de chêne j'ai trouve une petite discomyc
11-02-2016 20:28
Castillo Joseba
discos de color amarilloAlguna sugerenciaSaludosJo
04-02-2016 06:04
Danny Newman
http://mushroomobserver.org/230585Trichopeziza?Onl
07-02-2016 21:34
Francisco SÁNCHEZ
Collect 31/01/2016, on burnt ground, under burning
Melanopsammella
Bernard Declercq,
05-11-2013 17:37
Hello everyone,Collected on a decorticated branch of Quercus robur here in Belgium:
Ascomata superficial to slightly immersed, subglobose, 0,1-0,15 mm diam., papillate, pale brown, covered by black setae. Asci cylindrical, apex truncate, 8-spored but mostly observed with 16 part-spores, 42-47x6 µm. Spores fusiform, constricted 1-septate, soon disarticulating in part-spores; part-spores ellipsoid to wedge-shaped, smooth, hyaline, 3-3,5x1,5-2 µm. Paraphyses soon disappearing. Ectal excipulum of pale brown, small-celled textura ?epidermoidea; setae acute, base swollen, smooth, thin-walled, aseptate, blackish, 39-56x7-10 µm.
With those Hypocrea-like spores, this must be a Melanopsammella? Unfortunately, I only have documentation of species with septate hairs.
Your help is welcome.
Bernard
Hans-Otto Baral,
05-11-2013 21:19
Re : Melanopsammella
Hi Bernard
this reminds me strongly of Trichosphaerella decipiens, with apically acute, mainly unbranched setae. But what I know under that name (on Peniophora) has globose, finely warted spores.
But Ellis & Ellis (pl. 1193 in centre of plate) figure elongate spores.
Similar is Neorehmia ceratophora, with antler-like setae and also globose warted spores.
Zotto
this reminds me strongly of Trichosphaerella decipiens, with apically acute, mainly unbranched setae. But what I know under that name (on Peniophora) has globose, finely warted spores.
But Ellis & Ellis (pl. 1193 in centre of plate) figure elongate spores.
Similar is Neorehmia ceratophora, with antler-like setae and also globose warted spores.
Zotto
Enrique Rubio,
12-02-2016 17:45
Re : Melanopsammella
Hi to everybody
This collection of a Trichosphaerella/Melanopsamella species on decorticated wood of Sambucus nigra seems to be very close with Bernard's collection on Quercus.
Has someone more suggestions about it?
Thanks again
Hans-Otto Baral,
12-02-2016 17:53
Re : Melanopsammella
Yes, there are similarities!
I fear that nobody will see your posting except me and Bernard?
I fear that nobody will see your posting except me and Bernard?
Enrique Rubio,
12-02-2016 18:08
Re : Melanopsammella
Yes, Zotto. I think this is not easy
Enrique Rubio,
12-02-2016 18:24
Re : Melanopsammella
Has someone this article? Samuels & M.E. Barr (1998) Notes on and additions to the Niessliaceae (Hypocreales): Can. J. Bot. 75(12): 2166 ['1997']
Maybe it could help us...
Guy Garcia,
12-02-2016 18:35
Re : Melanopsammella
Salut Enrique,
Le voilà.
Amitiés, Guy
Le voilà.
Amitiés, Guy
Samuels-amp-Barr-CJB-75-2165-2176-1998-0001.pdf
Enrique Rubio,
12-02-2016 18:37
Re : Melanopsammella
Merci beaucoup, Guy
Enrique Rubio,
12-02-2016 18:52
Re : Melanopsammella
After reading the manuscript I think these both fungi belong to Trichosphaerella, at least s. Samuels & Barr, but it is not T. decipiens, the only described species in the text, with disarticulating ascospores in subglobose (spiny?) part-spores. The ascospores of our fungi are somewhat smooth and wedge-shaped, more or less fitting with Ellis & Ellis plate.
Guy Garcia,
13-02-2016 07:49
Re : Melanopsammella
Voici un article récent où il est décrit un nouveau Trichosphaerella bryophile et des précisions intéressantes sur le genre.