Page 20 - Pharmacognosy-II (06-PG 303)

and in the ridges by the fibro-vascular bundles, each forming a crescent
around a comparatively large lacuna and accompanied by fibers and
reticulate, lignified cells.
Innermost layer of the mesocarp : consists of large, polygonal, brown-
walled cells, with thick, porous inner walls.
3- Endocarp : parquetry arranged.
4- Endosperm consists of polygonal, thick-walled, cellulosic
parenchyma containing fixed oil and numerous small, oval aleurone
grains, each enclosing a minute, rounded globoid and a microrosette
crystal of calcium oxalate.

Diagram of T.S of Ammi visnaga
Powdered Ammi visnaga :

It is brown in color and characterized by :
1- Fragments of epicarp cells with some cluster crystals of Ca Ox.
2- Fragments with porous non-lignified thick-walled cells of the iner-most

layer of the mesocarp crossed by parquetry endocarpal cells.

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