UV fluorescence

UV fluorescence – attempts at photos.

Ochrolechia of interest… if UV+ orange, then it keys to O. arborea.  If UV- or UV+ white, then O. gowardii.  Alone, the UV response appears somewhat yellowish to me… (more so than the photo suggests). I have been tempted to call it closer to orange.


When I think of UV+orange, I mainly think of the medulla of Esslingeriana idahoensis, which leaves no doubt of its orange color…


Meanwhile, Cladonia portentosa is described as UV+white…