02-12-2013 02:50
Milanka TanaskovicBonjour à tous,Est-ce que quelqu'un parmi vous po
28-11-2013 23:18
Joop van der Lee
Found on horse dung, Fruitbody is bulb shaped
03-12-2013 00:03
Kees van den Berg
Hello,I found this ascomycete on a twig of querius
02-12-2013 21:37
Ralph Vandiest
Hello, I found these orange ascos on fallen cones
02-12-2013 22:19
Joop van der Lee
Today I managed to make photos of the conidiophore
01-12-2013 22:20
Ralph Vandiest
Hello,I found these xylaria between reed in a wetl
01-12-2013 21:23
Ralph Vandiest
Hello,I found this species on ashes of burnt reed.
24-11-2013 22:50
Rubén Martínez-Gil
Hola a todos.Pongo unas imágenes de una Otidea qu
Can anyone help me with this:
On the inside of the bark of Salix .
Perithecia soft black sphaerical with short necks. 0,15 mm wide, superficial, closely packed in groups of 5-6, several of these groups 3-4 cm apart. Ascospores hyaline, 50-60*2 µm, with high oil content, becoming at least 5-septate , maybe more. Asci 75*9 µm, IKL negative. Paraphyses: 100*7-8 µm, septate. No anamorf to be found.
Thank you,
Greet
Interesting collection. Are the perithecia stromatic? If so, you could consider the genus Sillia, e.g. S. ferruginea, which is described in Munk 1957 (another reference, see tab "Artikelen" at https://www.verspreidingsatlas.nl/1147010#). A generic description is given in sleutel (key) A9: see
http://www.mycologen.nl/Ascosleutel/downloads/SleutelA13_v3-1.pdf
Eduard
I suggest you consider the genus Ophioceras, primarily known from aquatic habitats but including some terrestrial species. The apical apparatus of asci is indeed J- but stains with blue ink or Congo red.
A good, if not comprehensive account was given by Shearer et al., Mycologia 91: 145-156. Should be available on Cyberliber.
good luck,
Jacques
Thanks for your advice and help,
@Eduard: I started out in the first place with the key you suggested (great key) and couldn't find a match.There is no stroma, only a dark patch surrounding the peritecia, this being wood stained black.
@Jacques: I made a new picture where I stained the asci with Congo-red. The coloring isn't much but I think it could be considered as a positive reaction. I read the article you suggested but couldn't find a species that matches my measurements. So it'll stay a Ophioceras sp.
Thanks,
Greet
