What shrub do you want to enter data for? Cloned Phenology Study Lilac (Syringa chinensis 'Red Rothomagensis'). If you (or a previous observer) received your plant as part of the original Northeast/North-Central research project or FROM ME, this is the type of lilac you have. The plant was incorrectly referred to as "Persian" Lilac in the Agricultural Experiment Station network literature. Common Lilac (Syringa vulgaris). This link is for reporting information on common purple lilacs (also called "hedge" or "old-fashioned") that observers have obtained on their own from nurseries, or already had growing on their grounds. Arnold Red Honeysuckle (Lonicera tatarica 'Arnold Red'). This was a cloned honeysuckle plant distributed as part of the original NE/NC research projects.