22-07-2015 22:54
Rubén Martínez-Gil
Hola a todos. Subo unas fotos de un asco que enco
21-07-2015 15:32
Steve ClementsBonjour,Trouvé le 15 Juillet sur fleur morte. Je
24-07-2015 16:25
Peter ThompsonHello Everyone,I have found some groups of immerse
24-07-2015 12:28
Lepista ZacariasHi everyone,Last year I found an ammount of specim
22-07-2015 23:35
Joaquin MartinHiCollected about branch in riparian forest, coexi
22-07-2015 16:07
Dartanha Soares
Hello to all, I would like to hear your opinion a
22-07-2015 21:55
John LeachHello all I found this Calonectria growing on old
22-07-2015 10:50
Gernot FriebesHi, I'm looking for help with another peculiar as
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
