25-01-2017 14:02
Stephen Martin Mifsud
The study of Moellerodiscus in Malta has so far co
09-02-2017 12:19
Castillo Joseba
He encontrado este hongo en ramas de laurel (Lauru
10-02-2017 11:14
Castillo Joseba
en rama de avellano (Corilus), los apotecios de
08-02-2017 18:17
Lothar Krieglsteiner
.. found at 18.2.2016 near Alte, Algarve, on a sma
09-02-2017 18:34
Bernard CLESSE
Bonsoir à tous,Trouvé cet après-midi, sur branc
09-02-2017 15:34
Bernard CLESSE
Bonjour à tous,Trouvé récemment ce Xylaria sur
08-02-2017 18:36
Lothar Krieglsteiner
.. at least it seems to be quite similar. But - fo
Nannfeldt and UV - what wavelength?
Viktorie Halasu,
29-05-2018 19:42
Hello forum,J.A.Nannfeldt in his 1966 paper ("On Otidea caligata, O. indivisa and O. platyspora") wrote about UV fluorescence which he had been testing in Otidea with rather promising results, planning to publish them later. However, I didn't find any later paper by him about this matter. Would anyone know, what wavelength of UV he actually used? Harmaja used 254 nm, Parslow et Spooner both 254 and 365 nm, but I didn't find any data about/by Nannfeldt. He wrote his interest in UV fluorescence was inspired by Rolf Santesson who showed him some examples of its use on lichens. So perhaps it's question for a lichenologist..
Thank you in advance.
Viktorie
Viktorie Halasu,
31-05-2018 21:18
Re : Nannfeldt and UV - what wavelength?
After having read a bit about lichens and also some Santesson's papers from that period, I think it might have been anything in the near and middle UV range (200-400 nm). Probably several wavelengths were used to demonstrate different chemical compounds.