This name is in current usage in both Europe and North America; but, apparently, for two different taxa. Mycologists seem to want to conserve this name. I.e., they prefer NOT to use the current correct name for the species in question — Amanita bulbosa var. citrina (Schaeff.) Gillet. The original use of the epithet in application to the familiar citrine amanita of Europe was in the combination “Agaricus citrinus Schaeff.” Unfortunately this is a posterior homonym of Agaricus citrinus Gunnerus, which is not an Amanita. Hence, an act of conservation is required to make “Amanita citrina” a correct name.