Am.  Jour  Pharm  ] 
Mar.,  1875.  J 
The  Jalap  Plant. 
115 
merce  \  by  which  is  not  meant  that  it  alone  produces  genuine  jalap,  but 
that  it  is  the  plant  that  gives  the  name  to  the  medicine.  The  best 
jalap  is  made  from  the  Exogonium  ;  but  good  jalap  may  also  be  got 
LEAVES,   FLOWEKS,   FRUIT,   ROOT,   ETC.,  OF  THE  JALAP  PLANT. 
from  many  other  species  of  the  Cojivolvulace^ — even  from  our  British 
species.  "  Corvolvulus  arvensis^  Soldanella^  macrocarpus^  and  probably 
many  others,  may  likewise  be  used  with  equal  advantage,"  says  Dr. 
Lindley.     The  habit  of  the  plant  is  well  given  in  the  "  Botanical  Reg- 
