35° 
PHARMACEUTICAL BOTANY 
pinnatifid, as in Ruta graveolens, or pinnate, as lower parts of Ruta 
graveolens, becoming reduced pinnate in Citrus Aurantium. Leaves 
exstipulate or with spiny stipules 
(.Xaythoxylum ). Stems and leaves 
abound in more or less sunken 
glands. Flowers pentamerous, vary¬ 
ing in color from yellow in Ruta to 
white in Citrus to pink ( Barosma 
betulina ) or pink crimson as in some 
Barosma and Diosma species, rarely 
to pinkish-purple (. Pilocarpus ); 
sepals five, aposepalous becoming in 
Citrus more or less synsepalous; 
petals five, apopetalus becoming 
more or less synpetalous and tubular 
{Correa grandiflora) ; stamens five, 
simple or with expanded bases, 
lobed, or lobes developed as stami- 
nal stipules and more or less split 
{Citrus)\ pistil of ten, five, three or 
two carpels, ovary as many-celled. 
Fruit a capsule ( Dittany , Xanthoxy- 
lum), berry {Citrus) or rarely a 
samara {Ptelea). Seeds albuminous 
or exalbuminous. Many of the 
plants contain volatile oils in their 
secretory cavities. 
Fig. 207. —Barosma betulina— 
Branch and flower. (Sayre.) 
Official drug 
Part used 
Botanical origin 
Habitat 
Aurantii Dulcis 
Outer rind of 
Citrus Aurantium 
Sub-tropics 
Cortex 
ripe fruit 
sinensis 
Aurantii Amari 
Rind of fruit 
Citrus Aurantium 
Northern India 
Cortex 
amara 
Limonis Cortex 
Outer rind of 
Citrus medica 
Northern India 
ripe fruit 
Limonum 
Pilocarpus Jaborandi 
Pilocarpus 
Leaflets \ 
1 Pilocarpus 
[ microphyllus 
j Brazil 
Buchu 
Leaves j 
Barosma betulina 
l and B.serratifolia 
Cape Colony 
