Syringa × laciniata or cut deeply into three to nine lobes or leaflets. The flowers are pale lilac, produced in loose panicles up to 7 cm long in mid spring. It is hardy to USDA plant hardiness zone 5. Syringa × laciniata Syringa × laciniata, the cut-leaf lilac or cutleaf lilac, is a hybrid lilac of unknown, though old origin. It is thought to be a hybrid between "Syringa vulgaris" from southeastern Europe and "Syringa protolaciniata" from western China. Although often cited as being from China, it more likely arose somewhere in southwestern Asia, where it was first scientifically described from cultivated plants
Botanic Garden of the Irkutsk State University Botanic Garden of the Irkutsk State University The Botanic Garden of the Irkutsk State University is a botanic garden in Irkutsk, Siberia, Russia. It is the only botanic garden in Baikalian Siberia (the Lake Baikal region) and is known as the Irkutsk Botanic Garden. Its mission is "to protect and enrich the flora of the Lake Baikal area and the world for people through public education, collection, propagation, research, and conservation of plants"."" The garden is principally an educational and scientific tool for the university and maintains the largest living plant collection in the region (more than 5000 plant taxa),