The present work reports the in vivo fluorescence spectra of messua ferrea L plant leaves in the visible region excited with the help of 500mW Ar+ laser (5145Å) .The fluorescence spectrum consists of thirteen discrete bands in the region 5300Å to 6700Å which are similar to CN red system of bands .We have also compared these bands with the bands of messua ferrea L seed oil, excited by transformer discharge. In vivo excitation of CN red system in the LIF plant leaves is a first report of this kind.
