716 SCIENTIFIC AND APPLIED PHARMACOGNOSY 



A. CONTAINING STARCH. Continued. 



b. Calcium oxalate wanting. 

 a Stone cells present. 



Characteristic starch grains 60. Calumba 



/3 Stone cells wanting. 



1. Starch grains 15 to 30 n in diameter. 



With yellow oil-secretion cells 61. Zingiber 



2. Starch grains 5 to 15 M in diameter. 



Long non-lignified bast fibers 62. Mezereum 



Ducts large 63. Pareira 



Lignified sclerenchymatous fiber 64. Serpentaria 



Powder lemon-yellow 65. Berberis 



3. Starch grains less than 5 M in diameter. 



Crystals of alkaloids with sulphuric acid . . 66. Hydrastis 



4. Starch grains altered. 



Large cells with swollen grains 67. Curcuma 



B. STARCH GRAINS FEW OR NONE. 



a. Calcium oxalate crystals present. 

 a In rosette aggregates. 



Non-glandular hairs 68. Anisum 



Oil-like globules in epidermis 69. Calendula 



Non-glandular hairs wanting 70. Freniculum 



/3 In monoclinic prisms. 



Crystals 15 to 20 n 71. Aurantii Amari Cortex 



Crystals 20 to 30 M 72. Aurantii Dulcis Cortex 



7 In raphides. 



Crystals 0.1 to 1 mm. long 73. Scilla 



6. Calcium oxalate crystals wanting. 



a Sclerenchymatous cells or fibers present. 



1. Dark pigment cells wanting. 



Stone cells with thickened inner walls . . 74. Sinapis alba 

 Stone cells ellipsoidal, uniformly thickened ... 75. Pepo 

 Parenchyma cells large, thin-walled .... 76. Colocynthis 



2. Pigment cells present. 



Stone cells with thickened inner walls . 77. Sinapis Nigra 

 Characteristic sclerenchymatous cells and fibers. 



78. Fenugreek 



