There are three subspecies:
Syringa reticulata subsp.
reticulata (syn.
Syringa japonica (Maxim.),
also syn.
S. amurensis var japonica (Maxim.)
Franch et Sav.- Ligustrina japonica (Maxim.) ) -
Japan.

Syringa reticulata subsp.
amurensis (Rupr.)
P.S.Green & M.C.Chang (syn.
S. reticulata var.
mandschurica (Maxim.)
H.Hara) -  Northeastern China, Korea, southeastern Russia.

Syringa reticulata subsp.
pekinensis (Rupr.)
P.S.Green & M.C.Chang -  North-central China.
 It has very distinct reddish-brown peeling bark.
There are three subspecies:
Syringa reticulata subsp. reticulata (syn. Syringa japonica (Maxim.), also syn. S. amurensis var japonica (Maxim.) Franch et Sav.- Ligustrina japonica (Maxim.) ) - Japan.
Syringa reticulata subsp. amurensis (Rupr.) P.S.Green & M.C.Chang (syn. S. reticulata var. mandschurica (Maxim.) H.Hara) -  Northeastern China, Korea, southeastern Russia.
Syringa reticulata subsp. pekinensis (Rupr.) P.S.Green & M.C.Chang -  North-central China.  It has very distinct reddish-brown peeling bark.
Syringa reticulata