Abstract The essential oil isolated from the aerial parts of Phlomis bracteosa Royle ex Benth., collected from the Pindari glacier area (Phurkiya) at 3000â3200 m height of the Himalayas was analyzed by a combination of GC, GC/MS and 1H- and 13C-NMR. Thirty-four compounds representing 88.9% of the oil were identified. The major constituents were germacrene D (34.3%), sabinene (6.2%), germacrene D-4-ol (4.9%), linalool (4.8%) and Î±-bulnesene (3.5%). The oil showed a high content of sesquiterpene hydrocarbons.