Micromorphological Studies on Gmelina arborea and Clerodendrum serratum

The crude root drugs of Gmelina arborea Roxb. and Clerodendrum serratum Moon are often adulterated with roots of Gmelina asiatica Linn. and Premna herbacea Roxb. respectively. The present paper provides certain anatomical standards for diagnosing the roots of the afore mentioned original drugs from their adulterants.