From the overground parts of Phlomis angustissima, a new phenylethanoid triglycoside, beta-(3-hydroxy,4-methoxyphenyl)ethyl-O-[beta-xylopyranosyl(1 -> 2)-alpha-rhamnopyranosyl-(1 -> 3)]-O-4-O-feruloyl-beta-glucopyranoside, named phlinoside F, was isolated along with the known compounds alyssonoside, samioside, lamiide, auroside, naringenin, and syringaresinol-4-O-beta-D-glucopyranoside. The structure of the new glycoside was elucidated by spectroscopic methods.