Aim The relationship between isoprenoid emission and hygrophily was investigated in woody plants of the I talian flora, which is representative of E uropean diversity. Methods Volatile isoprenoids (isoprene and monoterpenes) were measured, or data collected from the literature, for 154 species native or endemic to the M editerranean. The E llenberg indicator value for moisture ( EIVM ) was used to describe plant hygrophily. Ph...