A new flavonol glycoside, rhamnocitrin 3-O-ß-neohesperidoside was isolated from the dried leaves of Boscia salicifolia, together with rhamnetin 3-O-ß-neohesperidoside, rhamnocitrin 3-O-ß-glucopyranoside, and rhamnetin 3-O-ß-glucopyranoside.