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Rutaceae - rue, herb of grace, Weinraute
Subshrub native to Southeast Europe, 30-50cm high; leaves glabrous, glaucous; petals yellow, 4 or 5.
„The essential oil of aerial parts of Ruta graveolens was obtained by hydrodistillation with a 0.74% yield on a dry weight basis. Thirty-eight components were identified by GC and GC–MS analyses. 2-Ketones predominated in the essential oil, with undecan-2-one (46.8%) and nonan-2-one (18.8%) as the main constituents.“ [Potential allelochemicals from the essential oil of Ruta graveolens. V.De Feo, F. De Simone, F. Senatore, Phytochemistry, Vol.61 (5), 2002, 573–578]
„When psoralens from rue come in contact with human skin that is subsequently exposed to ultraviolet A light, an impressive photoirritant reaction can occur. This report both clarifies the distinguishing features of photoirritant reactions versus photoallergic reactions and reviews the pathophysiology and clinical presentation of phytophotodermatitis. R. graveolens can be associated with an impressive photoirritant reaction and should not be used as an insect repellent.“ [Rue the herb: Ruta graveolens–associated phytophototoxicity. Eickhorst, K; Deleo, V; Csaposs, J. Dermatitis, Vol.18 (1), 2007, 52–55]
