14-04-2026 21:52
Gernot FriebesHi,found on dead leaves of Carex elata. Conidia: 4
14-04-2026 20:31
Gernot FriebesHi,can this be Psilachnum lateritioalbum on Phragm
14-04-2026 05:32
Ethan CrensonHi all, A few weeks back a friend pointed out som
12-04-2026 17:56
Hardware Tony
Found on dead stems in February earlier this year
12-04-2026 15:52
Gernot FriebesHi,I'm looking for help with this anamorph collect
12-04-2026 12:22
William Slosse
In a dune grassland in Oostduinkerke (Belgium), on
11-04-2026 15:45
Zuzana Sochorová (Egertová)
Please, could anyone send me this paper?Moyne G.,
11-04-2026 13:34
Artem PtukhaHello, I am seeking assistance with the identific
11-04-2026 10:19
Michel Hairaud
Chers amis d'Ascofrance , voici une très bonne no
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