CANNABIS SATIVA 



2-2-5 



cells which form the third zone. These derive their name from 

 the brown contents, and can be distinguished from the hypodermal 

 cells by the thick walls and color. The fourth layer consists of 

 the dwarf cells, which are small, colorless, and porous, with 



pep- 



pmi — 



I ep 



Fig. 107. A, hemp fruit enclosed by persistent floral bract; B, outer surface of fruit with 

 bract removed ; C, transection through section of fruit coat, seed coat and cotyledon ; D, sur- 

 face view of portion of floral bract showing two types of epidermal hairs arising from it : al, 

 aleurone grains ; br, brown cells ; cot, cotyledon ; cy, cystolith ; ecp, epicarp ; end, endo- 

 sperm ; g/ hr, glandular hair ; hd, hypodermis ; hr, non-glandular hair ; i ep, inner (adaxial) 

 epidermis of cotyledon ; ep (left), outer (abaxial) epidermis of cotyledon ; ep (right), outer 

 epidermis of floral bract; pal, palisade cells of pericarp; pep, pericarp; psm, perisperm ; 

 f f, seed coat ; j/j, spongy parenchyma of seed coat ; / f, tube cells ; m', drawf cells. (Redrawn 

 and adapted by permission from Structure and Composition of Foods, by Winton and Winton, 

 John Wiley and Sons, Inc.) 



sinuous radial walls. Because of their extreme thinness, they can 

 be seen in transections only in carefully prepared material. The 

 innermost zone of the pericarp is the conspicuous palisade layer. 

 The outer and radial walls of the palisade cells are so greatly thick- 

 ened that the lumen is reduced to a narrow line for nearly two- 



