26-12-2025 21:19
Arnold BüschlenPithyella chalaudii Priou. Ist als Bryoparasit in
21-12-2025 09:32
Josep Torres
Hello.A tiny ascomycete found embedded in wood in
18-12-2025 21:17
Pol DebaenstThe identification took me to Byssonectria deformi
24-12-2025 17:08
Hulda Caroline HolteHello, I have found this propoloid ascomycete on
21-12-2025 21:32
Pol DebaenstHello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1
Pyrenochaeta nobilis var. ilicis
Chris Yeates,
08-02-2022 23:10
Hello all
A recent collection of this fungus on fallen leaves of a planted tree of variegated holly allowed a detailed study of its structures. One thing which was surprising was the presence of amorphous crystals in (or on) the pycnidial wall (top right in accompanying plate). These were definitely not stray crystals from the host tissues or another source, but solely confined to the pycnidia. I can find no references to this in the literature.
It might be interesting to see whether others have observed this or could look out for this feature. Particularly interesting would be whether such crystals also occur in var. nobilis on dead Laurus leaves or whether the crystal formation is triggered by having Ilex as a host.
Cordialement, Chris
