Pharmacognostic Studies on the Stem Bark of Streblus asper Lour.

The macroscopic and microscopic studies of the stem bark of Streblus asper Lour. are made. Macroscopic characters reveal that the outer surface of the bark has got longitudinal wrinkles with transverse channels. On drying the bark can be easily separated into two layers; the outer hard and the inner fibrous layer. Two types of stone cells, phloem fibres with broad lumen and large prismatic crystals of calcium oxalate are the chief diagnostic characters.