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BOTANY AND PHARMACOGNOSY. 



Fig. 103a. Phlox Carolina: A , lower portion of plant showing long roots with numer- 

 ous rootlets at the ends; B, parenchyma from cortex of rhizome showing two sclerotic 

 cells (s) ; C, cross-section of portion of rhizome showing parenchyma of cortex (p) which 

 contains protoplasm and starch grains, endodermis (e), leptome (s), tracheae (v), libriform 

 (t), wood parenchyma (w). parenchyma of pith containing starch grains and protoplasm; 

 D, isolated sclerotic cells from cortex; E, vessels with annular and spiral thickenings; 

 F, libriform cells; G, glandular hair from the leaf. 



Conducting cells or mestome include those cells which are 

 chietlv concerned in the transferral of either crude or assimilable 



