Merriam-Webster Dictionary:
African rue
noun
Definition of African rue
: an African plant (Peganum harmala) yielding harmine and harmaline
First Known Use: circa 1844
Syrian rue
noun
Definition of Syrian rue
: African rue
harmala
noun har·ma·la \ ˈhär-mə-lə \
variants: also harmal \ˈhär-məl\
Medical Definition of harmala
: an Old World herb (Peganum harmala) with strong-scented seeds that yield several alkaloids and are used as a vermifuge and stimulant
harmala in British
(ˈhɑːmələ)
noun
a perennial plant native to Europe and Asia Minor, characterized by its white flowers and round seed capsules
Peganum harmala
African Rue
PEGANUM HARMALA
AFRICAN RUE
Weed Wise (Clackamas Soil & Water Conservation District, Oregon):
African Rue (Peganum harmala)
Syrian Rue
[…]
Scientific Name(s): Peganum harmala L. Family: Zygophyllaceae (Creosote-bush family)
Peganum Harmala (Syrian Rue)
Peganum harmala, also known as Harmal or Syrian rue, is a perennial herbaceous, glabrous plant, that grows in semi-arid conditions, steppe areas and sandy soils, native to eastern Mediterranean region and widely distributed in Central Asia, North Africa and Middle East.
Harmal (Peganum harmala L. family Zygophyllaceae) is a perennial, glabrous plant which grows spontaneously in semi-arid conditions, steppe areas and sandy soils, native to eastern Mediterranean region.
Peganum harmala (L.)
[…]
Sometimes, in dry years, harmal is the only visible plant in the steppe, with its strong green colour, due to its toxicity and non-palatability for animals.
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Peganum harmala (Steppenraute)
Steppenraute
Peganum harmala
Steppenraute (Peganum harmala)