Accès membres

Mot de passe perdu? S'inscrire

16-12-2018 00:19

Elsa Sousa

Good evening,I found these cups on clay soil. I th

15-12-2018 18:27

Joop van der Lee

Found on cow dung.Two fruitbodies found which diff

14-12-2018 11:30

Gilbert MOYNE

Voici un petit asco que m'a apporté Andgelo et qu

09-12-2018 23:06

Joop van der Lee

Found on cow dung. Fruitbody is covered with tufs

14-12-2018 14:02

Per Marstad Per Marstad

Another species on Fagus, with oval spores, 27-31

14-12-2018 11:30

Gilbert MOYNE

Voici un petit asco que m'a apporté Andgelo et qu

13-12-2018 09:53

Per Marstad Per Marstad

This was growing on Fagus, in Norway.The spores ar

12-12-2018 20:58

Per Marstad Per Marstad

I found this on Fagus. Spores 60-75 x 5 my, with 8

14-11-2018 19:07

Andgelo Mombert

Bonsoir,Sur bois mort de feuillu. Apothécies sess

06-12-2018 07:35

Ethan Crenson

Hello all, These were found by my friend recently

« < 1 2 3 4 5 > »
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
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.