Two Euphorbia (Euphorbiaceae) species new for the flora of China (Xinjiang and Inner Mongolia)
Euphorbia caesia Kar. et Kir. and E. cyrtophylla (Prokh.) Prokh. are reported for the first time in China; E. caesia occurs in several localities in the northern Xinjiang and eastern Nei Mongol, and E. cyrtophylla in a single locality near Sailimu (Sayram) Lake (northern Xinjiang). A revised synonymy with typification, description and detailed distribution data are provided for each species.