Mapley leaf (IMAGE) Penn State Caption In late fall, the native shrub, mapleleaf viburnum (Viburnum acerifolium), exhibits fall color prior to the adjacent invasive privet (Ligustrum obtusifolium) which is still bright green and photosynthetically active. Credit Erynn Maynard-Bean/Penn State Usage Restrictions non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.