Abstract:Four newly recorded species of vascular plants in Inner Mongolia are reported.They are Tamarix arceuthoides Bunge,Cuscuta campestris Yuncker,Juncus libanoticus Thiébaut and Stellaria pallida (Dumortier) Crépin.Two new synonyms,Borodiniopsis D.A.German (Oct.2012) and Borodiniopsis alashanica (Maxim.) D.A.German et al.(Oct.2012) in the family Cruciferae are proposed,which should be rejected and replaced by Acirostrum Y.Z.Zhao (Aug.2012) and Acirostrum alaschanicum (Maxim.) Y.Z.Zhao (Aug.2012)，respectively.
