abstract comparative study on the essential oil constituents of pogostemon cablin (blanco) benth. (patchouli) and p. travancoricus bedd. var. travancoricus were investigated using gc and gc/ms analysis. eleven compounds from p. cablin oil (patchouli) and 13 from p. travancoricus var. travancoricus oil were identified. both species shared compounds like - and -patchoulene, patchouli alcohol (patchoulol), -caryophyllene, -guaiene, seychellene and selinene, although quantitatively less in p. travancoricus var. travancoricus.