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Artemisia L. is a widespread and varied genus of the family Asteraceae with great therapeutic and economic importance. It has greater than 500 species (the number vary depending on the authors: McArthur, 1979; Mabberley, 1990; Ling, 1982, 1991a, b, 1994, 1995a, b; Bremer and Humphries, 1993; Oberprieler, 2001; Valles and McArthur, 2001; Valles and Garnatge, 2005). It is a well recognized wind pollinated cosmopolitan genus, chiefly spread in temperate areas of mid to high latitudes of the northern hemisphere, settled in arid and semiarid environments landscape and has only few representatives in the southern hemisphere. Central Asia is its center of diversification, while the Mediterranean region and North West America are two derived speciation areas (McArthur and Plummer, 1978; Valles and McArthur, 2001). A small number of species are also reported in Africa and Europe (Ling, 1994; Tutin et al., 1976; Shultz, 2006). Many species of the genus have a high economic value as medicines, food, forage, ornamentals or soil stabilizers in disturbed habitats; some taxa are toxic or allergenic while some others are invasive weeds which can adversely affect crop yield (Pareto, 1985;