Blue is the RAREST colour to see in nature! Blue green elf cup, green stain, fungus, blue stain, greenwood cup, etc. is a stunning fungus that belongs to the genus Chlorociboria. They create a beautiful blue-green pigment called Xylinden, which is stunning to observe and highly valued in woodworking.

Thank you to Jason Hollinger and S. Rae for the blue stain images!

#fungi #fungus #mushrooms #nature #biodiversity #naturewalk"