File:Artemisa Herba Alba Floratrek2013.jpg
As Absinthe (Artemisia absinthium) and Roman wormwood (Artemisia pontica), Artemisia white grass is rich in thujone. Morocco is the only producer of its essential oil, which it exports about 30 tons each year.
http://floratrek.hautetfort.com/archive/2013/06/23/armoise-herbe-blanche.html