“In the course of time more than 69,000 species of fungi have been recognized and described. It has been estimated that the total MIP - 400 speciesnumber of fungal species, known and as yet unknown, is of the order of 1.5 million.

A comprehensive list of all fungi that have been incriminated as opportunistic human pathogens may well exceed 400 species.”

Source: Principles and Practice of Clinical Mycology – Page 1 By C. C. Kibbler