This document summarizes the key details about two plants: Datura and Ashwagandha. It describes their scientific classification, biological source, geographical source, macroscopic and microscopic characteristics, chemical constituents and tests. Datura contains tropane alkaloids like hyoscine and atropine. It is used medicinally as a parasympatholytic and for conditions like asthma. Ashwagandha contains steroidal alkaloids and lactones, with withanine as the main constituent. It has sedative, hypotensive and stimulant properties and is traditionally used to treat rheumatism, gout and skin diseases.