Twelve Ferulago (Apiaceae) species growing in Turkey, viz. F. asparagifolia Boiss., F. aucheri Boiss., F. confusa Velen., F. galbanifera (Miller) W Koch., F. humilis Boiss., F. idaea N. Ozhatay et E. Akalm, F macrosciadia Boiss. et Bal., F. mughlae Pesmen, F. sandrasica Pesmen et Quezel., F. silaifolia (Boiss.) Boiss., F. sylvatica (Besser) Reichb., and F. trachycarpa Boiss. were investigated for their chemical compositions by using a new technique: microdistillation. Milligram quantities of dried materials were sufficient for characterizing the composition of the volatiles using a GC/MS system.