14-08-2016 23:15
Alex Akulov
Dear friendsCan you help me to find the descriptio
05-06-2026 11:02
Thomas Læssøehttps://svampe.databasen.org/observations/10596691
04-06-2026 11:36
Gernot FriebesHi,found on Vaccinium myrtillus.Asci: IKI –, 8-s
05-06-2026 12:10
François Freléchoux
Capitotricha sp. sur Lonicea caerulea Caractères
19-05-2026 10:27
Patrice TANCHAUDBonjour, récolte récente sur terre retournée i
04-06-2026 18:39
Gernot FriebesHi,I collected this species in two different locat
22-05-2026 13:29
Gernot FriebesHi,I am curious to hear your opinion on this mater
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
