Spring Leaves (IMAGE) Penn State Caption n early spring, northern spicebush (Lindera benzoin) is a native shrub that is just breaking buds on the left, while an invasive shrub, Morrow's honeysuckle (Lonicera morrowii), has well-developed leaves on the right. 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.