There are at least 300,000 different species of fungi around the world that have no names. They are called dark fungi and the noticeable trace they leave behind is in the DNA of soil samples.
"It's time to start talking about this topic now," says Henrik Nilsson, biologist at the University of Gothenburg. The regulations governing the right of mushrooms to be named assume that it is something that can be picked on a forest walk or can be grown in a laboratory. The group that is against giving fungal species DNA-based names thinks that there must be something more than a DNA sequence.