 For making génépi liqueur, several species of "Artemisia" (the genus of the wormwoods) are particularly valued, including "A. genipi" (black génépi) and "A. umbelliformis" (white génépi) - either of which being sometimes referred to as "A. rupestris".The botanical identification of the plants traditionally collected for use in making génépi liqueur is complicated by scientific reclassification work in the genus "Artemisia", spurred by recent trends in molecular assay and cladistics , that has resulted in the decline in use (among academics) of common names used in traditional literature.It is likely that a wide range of wormwoods native to the mountainous areas of Spain, France, Switzerland and Italy have been used to make the liqueur, with personal taste, tradition and availability shaping the selection.