<p> The present paper deals with the study of micromorphology of Withania somnifera leaf. The light microscopic study of this plant indicate sharp alternation in the epidermal traits, with decreased number of stomata & epidermal cells & contrary to this increased dimensions of stomata (length/breadth of guard cells).The results indicate that plants has developed some adaptation or changes to survive under stressed conditions of auto-exhaust pollution & these changes could be consider as indicators of environmental stress.</p>