RESUMEN
The study is aimed to provide a comprehensive account on authentication of herbal drug named as Tukhm-e-balango (Lallemantia royleana Benth.) from the seeds of Ocimum basilicum by using microscopic, pharmacognostic, and phytochemical characterization. The crude medicinal plants and their parts are often adulterated or substituted in market due to improper identification by the consumers while among herbal plant sellers, taxonomic confusion is caused due to morphological similarities of the plant parts and lack of a standard identification system.In microscopy, both herbarium and fresh specimens were studied using qualitative and quantitative morphological characteristics of leaves, seeds, and pollen. For pharmacognosy, solubility, fluorescence, and physicochemical characterizers were analyzed whereas a total phenolic and flavonoids contents was determined in addition to DPPH radical scavenging activity. In current study, microscopic, pharmacognostic, and phytochemical characterization clearly differentiated L. royleana from O. basilicum. The major problem in herbal drug industry is caused due to confusion and controversy of certain synonyms used for more than one or two drugs. Sometimes, under the same common or local name, entirely different taxa are being sold in herbal markets. It is concluded that correct and proper identification of medicinal plants is very crucial to ensure the safety and efficacy of herbal medicines, as many medicinal plants are intentionally or unintentionally adulterated with similar species or varieties. In herbal market, the seeds of L. royleana are adulterated with seeds of O. basilicum due to their similar morphology.