Syringa reticulata Syringa reticulata Syringa reticulata (Japanese tree lilac; ; ) is a species of Lilac, native to eastern Asia: in northern Japan (mainly Hokkaidō), northern China (Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Shaanxi, Shanxi, Sichuan), Korea, and far southeastern Russia (Primorye). "Syringa reticulata" is a deciduous small tree growing to a height of 39' (12 m), rarely to 49' (15 m), with a trunk up to 11.8" (30 cm), rarely 15.7" (40 cm) diameter; it is the largest species of lilac, and the only one that regularly makes a small tree rather than a shrub. The leaves are
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),