Page 54 - Pharmacognosy 2 PG303 (1)

Pharmacognosy-2 (PG303) Level 2 Clinical Pharmacy-Pharm D

Powder
It is yellowish-brown to greenish brown in color with an agreeable aromatic
odor and aromatic sweet taste. It is characterized microscopically by:

1. Fragments of colorless, thick-walled polygonal endosperm cells
containing globules of fixed oil and aleurone grains containing micro-rosette
crystals of calcium oxalate.
2. Fragments of epidermal cells of the epicarp are usually polygonal with
smooth cuticle and very few anomocytic stomata.
3. Few fragments of yellowish-brown vittae generally crossed by the
endocarpal cells.
4. Fragments of lignified reticulate parenchyma generally accompanied by
narrow fibers with numerous oblique simple pits.
5. Hairs and starch granules are generally absent.

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