26-03-2026 15:31
Ã…ke Widgren
Hello,I found this one in October last year, on r
27-03-2026 15:23
Gernot FriebesHi,this Trichopezizella deviates from typical T. b
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
27-03-2026 15:08
Gernot FriebesHi,I'm looking for help with this coelomycete on C
27-03-2026 10:47
Ã…ge OterhalsI have tentatively identified this Stictis to S. f
24-03-2026 21:37
Elisabeth StöckliBonsoir,Sur bois (tronc) très pourri de conifère
25-03-2026 22:23
Marc Detollenaere
Dear Forum,On a debarked stem of Tilia, we found s
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Ã…ge OterhalsI hope someone can confirm the name of this collec
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.