122 ; A COMPENDIUM OF 
rieties of this genus found under the head of 
Dicentra. The picentra specrasives, dicentra 
eximea, dicentra cucullaria, and the dicentra 
canadensis. The pDICENTRA SPECTABILES is the 
showy ‘‘bleeding heart” of the hot-house; the 
second is the handsome, indigenous perennial, 
the red-flowered dicentra; the pICENTRA CUCUL- 
LAcIA is the ‘‘Dutchman’'s breeches” of the 
green-house. The origin of the word dicentra 
is Greek, meaning twice and spurred, the flow- 
ers being spurred at the base. The alkaloid is 
by no means the corydalia or corydaline of the 
eclectics; the former is crystalline and the lat- 
ter an amorphous brown powder, holding and 
incorporating within its substance the resin and 
other parts of the tuber or root. None of the 
preparations are officinal. 
Jalapa, Jalap, Exogonium Purga.—Natural 
order Convolvulaceze. The stem of the jalap is 
round and smooth, and attains a considerable 
height when there is a support near at hand 
about which its tendrils can twine. The stem 
bears cordate leaves with prominent veins; the 
flowers are purple and funnel-shaped, and not 
unlike the purple morning-glory, but the corolla 
is a little larger in the jalap. It has 5 stamens 
and 1 pistil, with a simple stigma. The root 
belongs to the class known as tuberous or bulb- 
ous, and is somewhat pear-shaped. Externally 
the tuber. is dark-brown in color and wrinkled; 
internally it is of a very light-brown color, in- 
clining to a leaden gray, and presenting under 
the magnifying glass a number of resin cells, 
but no fibres. The taste is sweetish and acrid, 
