rue(redirected from countryman’s treacle)
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1. Any of various aromatic woody herbs or shrubs of the genus Ruta of the Mediterranean region and western Asia, especially the ornamental R. graveolens, having bipinnately compound leaves that yield an acrid volatile oil formerly used in medicine.
2. Any of various other plants having similar foliage, such as meadow rue.
rueA perennial herb which contains alkaloids (arborinine), coumarins (bergapten, psoralen, xanthotoxin), and volatile oil with methylnonylketone, cineol, limonene and others.
In the Chinese pharmacopeia, rue is used primarily for snake and insect bites.
In Western herbal medicine, rue is antispasmodic, emmenagogue and vermifuge; it has been used for arrhythmias, intestinal colic, eyestrain, gout, musculoskeletal trauma, rheumatic pain, stress-related headaches, varicose veins and to evoke menses.
Cutaneous photosensitivity; rue should not be used in pregnancy.
See Ruta grav.