What are the Uses and Benefits of Peganum Harmala? Introduction Peganum harmala is a perennial, herbaceous plant known as Harmal. It is a popular herb in both spiritual and medicinal customs. It relates to plant Ruta graveolens, therefore, is also known as rue (wild rue, Syrian rue, African rue). Scientific Classification Kingdom: Plantae Clade: Angiosperms Clade: Eudicots Clade: Rosids Order: Sapindales Family: Nitrariaceae Genus: Peganum Species: P. harmala Binomial name Peganum harmala L. Synonyms Peganum dauricum Pall. Peganum crithmifolium Retz.