18-05-2026 12:43
Sylvie Le GoffBonjour à tousPuis je avoir votre aide sur ce que
19-05-2026 10:27
Patrice TANCHAUDBonjour, récolte récente sur terre retournée i
18-05-2026 10:13
Lieve Deceuninck
Dear forum members,I identified this as the teleom
17-05-2026 19:05
Thomas FlammerI have found this tiny 200 ym cup shaped apothecia
17-05-2026 16:41
Margot en Geert VullingsWe found this Lachnum on an old Rubus stem.Fruitbo
05-04-2026 22:46
Lothar Krieglsteiner
on wood of Ceratonia, Algarve, 3.4.2026.The color
15-05-2026 13:33
Sylvie Le GoffBonjour à tousJe serais très reconnaissante enve
16-03-2011 14:31
roman vargas albertoHi. I would like some opinion about this Peziza
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.