700 BOTANY AND PHARMACOGNOSY. 



staphisagria, stramonii semen, taraxacum (Fig. loi, D) ; triticum and 

 vanilla (Figs. 256; 285, G; 313). 



Leaves, herbs and flowers do not, as a rule, contain reserve starch. 



A. DRUGS AND FOODS WITH CALCIUM OXALATE 



CRYSTALS. 



I. CRYSTALS IN ROSETTE AGGREGATES. 



Not more than 7 m in diameter: Anisum (Fig. 244), calendula (Fig. 

 296), carum (Fig. 247), conium (Fig. 248), coriandrum (Fig. 245), foenic- 

 ulum (Fig. 246). 



Not more than 15 A* in diameter: Caryophyllus (Fig. 312) and 

 humulus (Fig. 298). 



Not more than 25 m in diameter: Althaea (Fig. 99, 5), buchu, can- 

 nabis indica (Fig. 279), castanea, cusso, eriodictyon (Figs. 283, A; 285, 

 F), euonymus (Fig. 300, E), frangula (prisms and pyramids also occur) 

 (Fig. 228), galla, gossypii cortex (Fig. 231), granatum (Fig. 234), pimenta 

 (Fig. 302, B), senna (Fig. 263), stramonii folia (Fig. 117). 



Not more than 35 /" in diameter: Jalapa (Fig. 288), pilocarpus (Fig. 

 257), rumex, stillingia, viburnum prunifolium and viburnum opuius 

 (occasionally). 



Not more than 100 y^ in diameter: Chimaphila, 40 to 60 /^ ; gera- 

 nium, 45 to 70 /i, and rheum, 50 to 100 M (Figs. 281, A; 289). 



2. CRYSTALS IN MONOCLINIC PRISMS OR PYRAMIDS. 



Not more than 10 m in diameter: Coca (Fig. 286), hyoscyamus 

 (Fig. 282, A), and uva ursi (Fig. 300, D). 



Not more than 30 m in diameter: Calumba (in stone cells, Fig. 302, 

 H), frangula (Fig. 228), granatum (rosette aggregates also occur, Fig. 

 234), hamamelis, quercus alba (rosette aggregates also occur) (Figs. 300, 



B, F), rhamnus purshiana (Fig. 229a), and senna (Figs. 263). 



Not more than 30 m in diameter: Cardamomum (Fig. 253), euca- 

 lyptus, gelsemium (Fig. 208), pimenta (occasional) (Fig. 302, B), prunus 

 virginiana, quassia (cryptocrystalline crystals also occur) (Fig. 239), 

 vanilla (Figs. 256, 313), viburnum opuius, viburnum prunifolium (occa- 

 sional), and xanthoxylum. 



Not more than 100 or 200 /" in diameter: Krameria, about 100 M 

 (Figs. 196; 300, C), and quillaja, 35 to 200 fj- (Figs. 315; 281, C; 300, G). 



3- CRYSTAL FIBERS PRESENT. 



Crystal fibers occur in the following drugs, which are grouped 

 according to the size of the individual crystals : 



