30-06-2025 12:09
Edvin Johannesen
This tiny, rather "rough" erumpent asco was found
30-06-2025 16:56
Lydia KoelmansPlease can anyone tell me the species name of the
30-06-2025 14:45
Götz Palfner
This is a quite common species on Nothofagus wood
30-06-2025 06:57
Ethan CrensonHi all, Another find by a friend yesterday in Bro
25-06-2025 16:56
Philippe PELLICIERBonjour, pensez-vous que S. ceijpii soit le nom co
29-06-2025 18:11
Ethan CrensonHello all, A friend found this disco yesterday in
28-06-2025 16:00
Josep Torres
Hello.A tiny fungus shaped like globose black grai
27-06-2025 14:09
Åge OterhalsI found this pyrenomycetous fungi in mountain area
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