556 PHARMACEUTICAL BOTANY 
OrriciAL DruGc Part Usep __ BorANICAL ORIGIN HABITAT 
Cascara Sagrada Bark Rhamnus Purshiana Northern California, 
Oregon, Washington, 
and southwestern Brit- 
ish America 
Frangula Bark Rhamnus Frangula Europe 
Rhamnus Cathartica Fruit Rhamnus cathartica Asia and Africa 
UnorricIAL Drue , 
Ceanothus Root Ceanothus americanus North America 
Zizyphus Fruit Zizyphus sativa Mediterranean region 
Vitace& orn Grape Famiry.—Rarely tall, herbaceous, 
usually shrubby and climbing, more rarely shrubby, upright 
Fic, 422.—Northern Fox Grape (Vitis Labrusca). 1, portion of twig, with leaf, 
inflorescence and tendril, about natural size; 2, median longitudinal section of a ae 
fect flower, enlarged; 3, perfect flower (enlarged) with petals removed; 4, longi- 
tudinal section of fruit (berry); 5, seeds, natural size and enlarged. (7-4 afi Gray; 
5, after Engelmann, from C. E. Bessey, Nebraska Hort. Soc. Ann. Rept. 1895.) (Gager.) ; 
