C.J.Chen, Hoch & P.H.Raven (Haussknecht) 1992 - Chen C-J, Hoch PC, Raven PH (1992) Systematics of Epilobium (Onagraceae) in China. Systematic Botany Monographs 34: 1-209. doi: 10.2307/25027806.
There is no corrections for Epilobium amurense subsp. cephalostigma yet.