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23-09-2018 05:26

xian zhang xian zhang

Hello everyone, Is this specimen Pachyella clypen

21-09-2018 11:57

Vasileios Kaounas Vasileios Kaounas

At the moment I do not have enough data.Just a fri

23-09-2018 22:21

Marc Detollenaere Marc Detollenaere

Good evening, On dead leaves of Ammophila I found

18-09-2018 14:10

Savic Dragisa

Is this Pachyella punctispora? I found it on a dam

23-09-2018 13:36

Rubén Martínez Gil Rubén Martínez Gil

Hola a todos. Subo unas fotos de una Peziza que e

23-09-2018 14:10

Rubén Martínez Gil Rubén Martínez Gil

Hola a todos. Subo unas fotos de una Peziza que e

24-09-2018 19:12

Castillo Joseba Castillo Joseba

Localizado ayer  en restos de madera de haya quem

21-09-2018 23:44

Edouard Evangelisti Edouard Evangelisti

Bonjour le forum, Pourriez-vous m'aider à confir

13-09-2018 19:17

Marc Detollenaere Marc Detollenaere

Dear forum, Yesterday I found setous fruit bodies

21-09-2018 15:10

Johan Myhrer

Central sweden in a marsh by a shallow lake I foun

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Nannfeldt and UV - what wavelength?
Viktorie Halasu, 29-05-2018 19:42
Viktorie HalasuHello 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 Halasu, 31-05-2018 21:18
Viktorie Halasu
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.