New mapping symbols used from vol. 13 onwards

On the maps, the status of a taxon in the relevant grid cell is indicated with a special symbol. In the text, the corresponding sign designations are used in connection with the territory abbreviations to denote the status in a certain territory, as exemplified by "Fe" (Finland) below. In comparison to the previous volumes (10–12) of AFE, the symbols and signs denoting "probably extinct introduction" and "extinct introduction" are novelties.

in maps	in text	explanations
	Fe	native (including archaeophytes)
	*Fe	status unknown or uncertain
	[Fe]	introduction (established alien)
	×Fe	probably extinct (or at least not recorded since 1950) native or archaeophyte
	†Fe	extinct native or archaeophyte
	[×Fe]	probably extinct introduction
	[†Fe]	extinct introduction
	?Fe	record(s) uncertain regarding identification and/or locality

Old mapping symbols

Sixteen different types of symbols have been used in AFE volumes 1–11. If the map gives the areas of two or more taxa, the special symbols (+, x, ?, etc.) belong to the taxon marked by black dot, unless otherwise stated.