24-04-2015 14:49
Dragiša SavicI found it on Galium mollugo, about 1mm tall, does
27-04-2015 15:43
Nina FilippovaHello dear Forum.This very early species was found
27-04-2015 17:58
Christian Lechat
Hi to all,I again need your help, somebody would h
24-04-2015 22:07
Dartanha Soares
Dear all, This week I found this fungus, which I
25-04-2015 16:24
Castillo Joseba
En la foto parecen ascomas de forma cupiliforme, Â
Sur bourgeon de Rhododendron. Je suis pratiquement certain qu'il s'agit de Pycnostysanus azaleae mais comme c'est la première fois que je le vois, je souhaiterais une confirmation.Conidies variables de forme : ellipsoïdes, subglobuleuses, citriformes, fusoïdes… : 5,5-11x5-5,5
Bernard
Dear Bernard,
your determination is correct. The species is quite common on cultivated Rhododendron and is transfered by the cicada Graphocephala fennahi (which is quite beautiful!).
Regards from Lothar
Thank you for your confirmation, to update the name of the fungus and the name of the cicada responsible for the appearance of the fungus!
Sincerely,
Bernard
Hello All,
Looks like this disease of Rhododendrons is spreading. It occurs regularly each year on a hybrid shrub in our garden in North Argyll, Scotland.
What is a puzzle, is what is the transmission agent as we are definitely not within range of Cicadas!
Kind regardes,
Peter
We're in range - Graphocephala fennahi (Graphocephala coccinea) is a leafhopper related to cicada's: http://scholar.lib.vt.edu/ejournals/JARS/v34n4/v34n4-wheeler.htm
And yes, a very distinctive looking beastie!
With regards,
Jenny