Objective:Aerva lanata (Linn) Juss ex Schult,family Amaranthaceae,is a common wayside weed.The herb is accepted by the Ayurvedic Formulary of India.This study was undertaken to establish morphoanatomic and physiochemical standards of A.lanata.Methods:Leaf constants and high-performance thin layer chromatography fingerprint profiles of A.lanata were performed.Results and conclusion:The physico-chemical,morphologic,and histologic parameters presented in this paper may be proposed as standards to establish the authenticity of A.lanata and help differentiate it from other species such as Aerva tomentosa.