05-05-2026 22:40
Gernot FriebesHi,I believe this is a Plagiostoma growing on a Sa
06-05-2026 11:25
Castillo Joseba
Me mandan el material seco de Galicia (España) re
06-05-2026 17:23
Thomas Læssøehttps://svampe.databasen.org/observations/10594257
28-04-2026 20:07
Lothar Krieglsteiner
... on twig in the air at standing Ceratonia siliq
04-05-2026 18:13
Stephen Martin Mifsud
ID request for what seems to be a true aquatic fun
04-05-2026 16:39
Stephen Martin Mifsud
ID request: This specimen was collected in Malta o
28-07-2011 18:31
Alex Akulov
Dear FriendsToday I made the pdf file of Velenovsk
04-05-2026 09:50
Castillo Joseba
Me mandan el material seco de Galicia,(España) re
While looking at lichens on a twig under a dissecting microscope, I noticed what looked like 100 um perithecia (some spherical, others apparently deflated into tiny black buttons) apparently growing on an algal crust on a Prunus spinosa twig. I now see they are called chasmo- or cleistothecia.
They look very similar to Erysiphe species (rather similar to E flexuosa on Aesculus? Update: similar, but not as wavy), with c. 100 um appendages about 6 um wide, with hooked tips.
There are several asci per cleistothecium, each with what looks like at least 8 ascospores. The asci are c 55 x 40 um. The spores are 15.5-17.9 x 9.9-11.3 um (5 spores measured).
Warwickshire, UK Thanks for any information.
It does not answer your question per se but I find these fungi from time to time on bryophytes. It seems that mature fruitbodies fall from vascular plants, as they are not connected to other things via mycelium. I guess the blow around like a tumbleweed and disperse spores further away if the ascomata can act as propagules themselves. The hairs may allow them to get hooked onto vectors. Not sure, just a theory based on my own observations and thoughts.
All the best,
George