This group of mushrooms was first defined as a subgenus of Leucocoprinus by Marcel Locquin in 1945 .
Group was then elevated to the status of genus by Rolf Singer in the journal Sydowia in 1948 .
This group of mushrooms was first defined as a subgenus of Leucocoprinus by Marcel Locquin in 1945 , and it was then elevated to the status of genus by Rolf Singer in the journal Sydowia in 1948 .