13-02-2026 03:30
Tomaz Vucko
Hello! I found these immersed perithecia on a stic
12-02-2026 21:34
patrice CallardBonjour, la face inférieure des feuilles ce certa
11-02-2026 22:15
William Slosse
Today, February 11, 2026, we found the following R
12-02-2026 14:55
Thomas Læssøehttps://svampe.databasen.org/observations/10581810
11-02-2026 19:28
Lothar Krieglsteiner
on small deciduous twig on the ground in forest wi
25-04-2025 17:24
Stefan BlaserHi everybody, This collection was collected by JÃ
10-02-2026 17:42
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me donner
10-02-2026 18:54
Erik Van DijkDoes anyone has an idea what fungus species this m
09-02-2026 20:10
Lothar Krieglsteiner
The first 6 tables show surely one species with 2
Good eveningFound in Bern, Switzerland, near the river Aare on deer dung in culture, after 2 weeks.
I think it is a Melanospora species.
Perithecia roundish, about 350 my in diameter. Beak 250 to 500 my long, 50 my wide. Ascis very volatile. Spore-bearing part about 50 x 30 my with a clearly separated slender cylindrical stalk. 4 or 8 spores. Spores olive brown, elongated lemon-shaped, with a small germinal pore at both ends. No germinal fissure. Apical ends of the spore minimally hyaline.
Spores (19.6) 22 (23.1) x (11.2) 12 (12.8).
In von Arx & Müller - Die Gattungen der amerosporen Pyrenomyceten M. leucotricha is an option, but I am unsure.
Am I right with Melanospora and can someone help me with the species?
Greetings, Simon
Your mushroom may be a little immature, but I actually think it is Melanospora zamiae. M.brevirostris is close but the spores are larger and the beak is shorter.
Michel.
Thank you very much for your help.
In the meantime, I have noticed that M. leucotricha is a synonym of M. zamiae (Yasmina Marin-Felix et al. / MycoKeys 44: 81-122 (2018)).
In von Arx & Müller, die Gattungen der amerosporen Pyrenomyceten 1954, M. zamiae and M. leucotricha are two species. The main difference between the two species in this work is, in my opinion, the presence of germinal clefts in M. zamiae.
I have noticed that the very thin-walled spores of M. zamiae in cotton blue can colapse very quickly and give the impression of germinal clefts. Perhaps this was misinterpreted at the time.
Greetings, Simon
