POWDERED DRUGS AND FOODS. /O? 



POWDERS OF A BROWNISH COLOR. 



I. Fibrovascular Tissue present. 

 A. Containing starch. 



c. Calcium oxalate crystals present. 

 a In rosette aggregates. 



1. With sclerenchymatous fibers. 



* Containing oil, resin or tannin masses. 



Sclerenchymatous fibers few. 



103. Belladonnse Radix 

 Starch grains 4 to 20 M- - 104. Gossypii Cortex 

 Starch grains 3 to 7 M, compound. .105. Rubus 



Crystals 10 to 35 M 106. Juglans 



Crystals 35 to 70 M 107. Aralia Nudicaulis 



Starch grains 15 to 30 M 108. Stillingia 



Modified bast fibers 109. Euonymus 



Red with alkalies no. Rumex 



Fibers few i loa. Canella 



** No resin or tannin masses. 



Crystals about 25 ^ in. Althaea 



2. Sclerenchymatous fibers wanting. 



* Containing tannin. 



t With oil-secretion reservoirs. 



Starch grains ellipsoidal. 1 12. Fruit of Clove 

 Reddish brown tannin masses. 113. Pimenta 



ft Oil-secretion reservoirs wanting. 



Light-brown tannin masses 114. Galla 



Calcium oxalate 45 to 70 M.nS- Geranium 

 Calcium oxalate ^0 to 100 M. . .116. Rheum 

 ** Without tannin. 



Sphenoidal micro-crystals. 



117. Belladonnse Radix 



jS Crystals in monocUnic prisms and pyramids. 



Crystal fibers 118. Frangula 



Sclerenchymatous fibers characteristic. .. 119. Krameria 

 Crystal fibers and stone cells.. 120. Rhamnus Purshiana 

 Crystals in stone cells 121. Juniperus 



7 Crystal fibers present. 



I, Sclerenchymatous fibers strongly lignified. 



* Colored reddish with alkalies. 



Without stone cells 122. Frangula 



With stone cells 123. Rhamnus Purshiana 



