1) Genus smyrnium 2) Rosid dicot genus 
(Alexanders, Black Lovage, Horse Parsley) Black Loveage, Horse Parsley and Alexanders; these are all common names for this herb. At one time, Alexanders were grown as a major culinary and medicinal plant, but are now hardly seen in today's herb garden. This biennial is large and resembles celery. They grow from 3 to 5 feet high and their dark stems...
[n] - Alexanders
genus Smyrnium noun Alexanders