I've received photos and descriptions of two ascomycetes that are troubling me a bit. The first one shows some similarities with Byssolophis but I think Byssolophis species should have larger ascospores... So maybe it's something else? Here's a short description:

On wood of a dry, decorticated branch of probably Castanea, 3 cm in diameter.

The ascomata are small, +- spherical and have a slit-like ostiole. They sit on a black subiculum. The asci are uniseriate, negativ in Lugol and measure about 45-55 x 4-5 µm. The ascospores are hyaline and have one transverse septum at which they are strongly constricted. They measure about 5-7(8) x 3 µm. The hamathecium consists of long, filiform elements.

Thanks for any help!

Best wishes,
Gernot

Alain GARDIENNET, 10-07-2015 21:33

Re : Byssolophis?

Typical A. globosum, exactly.

Alain