In most reference and text-books on botany, the number of known species of fungi is given as from 75,000 to 100,000. The sources of these estimates are rarely cited but it may be inferred that most of them trace back, usually indirectly, to the number of descriptions compiled in the twenty-five volumes of Saccardo (8) which amounts to somewhat over 81,000, usually with a more or less generous allowance for the number of valid species described too late to be included in the last volume of that work, which appeared in 1931, and which have appeared since that time.
Proceedings of the Iowa Academy of Science
©1951 Iowa Academy of Science, Inc.
Martin, G. W.
"The Numbers of Fungi,"
Proceedings of the Iowa Academy of Science, 58(1), 175-178.
Available at: https://scholarworks.uni.edu/pias/vol58/iss1/18