268 
PHARMACOGNOSY. 
With cork fragments .... 44a. Glycyrrhiza (Spanish) 
5 In raphides. 
Tracheids with bordered pores 45. Ipecacuanha 
Long sclerenchymatous fibers . . .46. Phytolaccae Radix 
Thickened endodermal cells .... 47. Veratrum Viride 
b. Calcium oxalate wanting, 
a Stone cells present. 
Characteristic starch grains 48. Calumba 
£ Stone cells wanting. 
1. Starch grains 15-30 /u in diameter. 
With yellow oil-secretion cells 49. Zingiber 
2. Starch grains 5-15 /u. in diameter. 
Long non-lignified bast fibers 50. Mezereum 
Ducts large 51. Pareira 
Lignified sclerenchymatous fibers .... 52. Serpentaria 
3. Starch grains less than 5 in diameter. 
Crystals of alkaloids with sulphuric acid . . 53. Hydrastis 
4. Starch grains altered. 
Large cells with swollen grains 53a. Curcuma 
B. Starch grains few or none. 
a Calcium-oxalate crystals present, 
a In rosette-shaped crystals. 
Non-secretion hairs 54. Anisum 
Pollen grains 55. Calendula 
Non-secretion hairs wanting 56. Fceniculum 
/3 In monoclinic prisms. 
Crystals 15-20 57. Aurantii Amari Cortex 
Crystals 20-30 m 57a Aurantii Dulcis Cortex 
7 In raphides. 
Crystals 0T-1 mm. long 58. Scilla 
b. Calcium-oxalate crystals wanting, 
a. Stone cells present. 
Stone cells containing air 59. Colocynthis 
Not pungent 60. Linum 
Pungent, with yellowish pigment cells . 61. Sinapis Alba 
Pungent, with brownish-red pigment cells, 
62. Sinapis Nigra 
|8 Stone cells, if present, not well developed. 
1. Containing pollen grains. 
Fragments of pappus 63. Arnicse Flores 
Pollen grains prickly, with three pores . .64. Calendula 
Pollen grains nearly smooth 65. Crocus 
Bitter, ducts scalarif orm 66. Chirata 
