Y. HANEDA 



341 



Fig. 2. Dictyopanus gloeocyst, a luminous fungus from Hachijo Island, Japan. 



Among these the most interesting fungi are Mijcena pruinosoviscida 

 var. rabaulensis from Rabaul and Mycena rorida from Singapore. Both 

 species are remarkable among many luminous fungi because only the 

 fresh damp spores which have fallen out of the fruitbody are lu- 

 minous. The spores which fall on a dry place are not luminous, but 

 they become luminous when water is dropped on them. 



From Formosa Dr. K. Kominami (1930) reported a luminous 

 species, Mycena photogena (Japanese name Hotaru-Dake, meaning 



