The essential oil obtained by hydrodistillation of flowers of Calycanthus floridus L. var.oblongifolius (Nutt.) D.E. Boufford & S.A. Spongberg, planted in Sabzevar, Khorasan Province(Iran), was analyzed by GC and GC/MS. Eighteen compounds representing 90.1% of theflower oil of Calycanthus floridus L. var. oblongifolius were identified, among them 1,8-cineol(33.1%), bornyl acetate (14.1%), α-pin...