Lentodium squamulosum has been shown to be tetrapolarly heterothallic. The 4 predicted mating reactions can be recognized by gross characters on Potato dextrose agar, but not on other media tested. Three sectors were found, 2 of which do not seem to dikaryotize with any of the 4 established mating types. Malt extract would appear to yield more consistent fruiting than Oat flake agar.
Proceedings of the Iowa Academy of Science
©1966 Iowa Academy of Science, Inc.
Robinson, Albert D. and Rosinski, Martin A.
"Tetrapolar Heterothallism in the Basidiomycete, Lentodium Squamulosum,"
Proceedings of the Iowa Academy of Science, 73(1), 15-22.
Available at: https://scholarworks.uni.edu/pias/vol73/iss1/6