[1][2] It was first described in 1936 by the Belgian mycologist Maurice Beeli who classified the species as Lepiota Montagnei var.

The specimen originally examined by Beeli was collected by M. Goossens-Fontana in 1923 in the Eala region of Zaire, Central Africa (now the Democratic Republic of the Congo) where they were found growing on the soil.

[10] The second was recorded in Brazil in 1985 by Rolf Singer where they were found growing on dead Dicotyledon leaves in a flood plain.

[8] The specific epithet montagnei as used in the earlier classification was likely named to honour the French bryologist and mycologist Jean Pierre François Camille Montagne.

[12] The illustrations provided along with Beeli's study and the description from Heinemann are describing a mushroom which is very similar looking to Leucocoprinus heinemannii.