15-01-2026 15:55
Lothar Krieglsteiner
this one is especially interesting for me because
17-01-2026 19:35
Arnold BüschlenHallo, ich suche zu Cosmospora aurantiicola Lite
16-01-2026 00:45
Ethan CrensonHi all, On decorticated hardwood from a New York
18-01-2026 12:24
Josep Torres
Hello.An anamorph located on the surface of a thin
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
10-01-2026 20:00
Tom SchrierHi all,We found picnidia on Protoparmeliopsis mur
I found on a barkless branch of oak(quercus), lying on moist soil, stromata with perithecia with papillate ostioles.
Subilicum: woolly, rust-colored, sometimes covering two thirds of stromata, sometimes thinner
Stromata: 1.5mm globose, ostiole papillate, ectostromata: black and hard, endostromata: cream-colored woolly
Asci: cylindrical, 256 x 12.50 µm; ascal plug J + bright blue, Size, m = 15x7,8 µm
Spore: elliptical on one side flattened, completely surrounded by a slime layer round appendages, young with several large and small drops later, germ slit as long as the spore
Dimensions: 24.79 to 28.66 x 10.45 to 11.22 µm Qm = 2.47
Paraphyse: filiform, hyaline
Is it Rosellinia corticium, the spores are wider than mentioned in the key and the ascal plub is also very large?
Thanks in advance,
François Bartholomeeusen
Rosellinia corticium is a fairly variable species and I think your fungus fits well, tough the ascospores average broader. Often in Roselinia some apical plugs deviate in being more elongate than regular ones. I guess the one on your third photo is more representative.
Cheers,
Jacques
Cordialement,
François