10-01-2023 23:54
Marc Detollenaere
Dear Forum,On dead branches of Salix sp, I found s
04-01-2023 14:28
Michel Hairaud
Bonjour, I have lately been given a puzzling coll
18-12-2022 11:12
Viktorie Halasu
Hello, is there any index to Höhnel's works (bot
08-01-2023 18:08
Robin Isaksson
Hi, Dont know if it is correct genera. Maybe so
07-01-2023 22:54
Thorben HülsewigHi there,last year (22.10.22) i found on a branch
06-01-2023 16:09
Marc Detollenaere
Dear Forum,On the leaves of Ammophila arenaria ( n
17-08-2017 20:37
Viktorie Halasu
Hello,I found this Peziza 10 days ago, in a mixed
04-01-2023 19:57
Bernard CLESSE
Bonsoir à toutes et tous,J'ai trouvé cet asco im
Lophiostoma or Massarina on Salix?
Marc Detollenaere,
10-01-2023 23:54
Dear Forum,On dead branches of Salix sp, I found some immersed black perithecia. No slit-like beak was seen.The asci measured 90x15µ. Spores were hyaline, 3-septate with constriction at all septae and contained 4 large guttules. They measured 21-23x6.5µ.
Any ideas?
Eduard Osieck,
11-01-2023 11:21
Re : Lophiostoma or Massarina on Salix?
Hi Marc
Lophiotrema (Massarina) rubi is presumably the most likely option, but more species have such spores. This species should have a broad slime sheath, well visible in black ink.
Eduard
Lophiotrema (Massarina) rubi is presumably the most likely option, but more species have such spores. This species should have a broad slime sheath, well visible in black ink.
Eduard
Marc Detollenaere,
11-01-2023 12:26
Re : Lophiostoma or Massarina on Salix?
Thank you for your reply Eduard.I examined some more ascomata but I could not find any sheets around the spores. Is M rubi not descriped with only one septum?
I searched further and Lophiotrema nucula could fit.It starts with 1 septum and with age it is 3-septate. Following my sources, spores do not have mucous sheets here and it is known from Salix.
What do you think?
Marc
I searched further and Lophiotrema nucula could fit.It starts with 1 septum and with age it is 3-septate. Following my sources, spores do not have mucous sheets here and it is known from Salix.
What do you think?
Marc
Eduard Osieck,
12-01-2023 11:18
Re : Lophiostoma or Massarina on Salix?
That seems a close match, in particular because of the lacking sheath. My only doubt concerns the ascus form which should be cylindric in the genus Lophiotrema (see e.g. photo in Zhang et al. 2009). Both Lophiotrema rubi and L. nucula get additional septa with age (after release from the ascus). The unusual form shown on your photo could be an artefact. Was the slide made with water?
Eduard
Eduard