Volatile compounds of Mandevilla guanabarica (Apocynoideae, Apocynaceae) from three restingas in Rio de Janeiro, Brazil

► Volatiles of M. guanabarica from three restingas were submitted to GC/MS. ► Qualitative and quantitative chemical profiles of volatile were distinct. ► Leaf histochemical revealed the presence of volatiles in idioblasts and mesophyll. ► Possible influences of environment and/or physiological variations were suggested.