126 THE PERICARP. 
suture, by which the dehiscence often takes place, as in Fox 
glove. 
482. The dehiscence is loculicidal (splitting or breaking — 
into the cells), when the pericarp bursts vertically at the back — 
of the cells or by the dorsal suture, the layers forming the 
dissepiments being left in union, and the valves being op- 
posite to the dissepiments, (each valve in this case consisting 
of the adjacent halves of two adjoining carpels): as in the — 
Liliacez. 
483. The dehiscence is septicidal (splitting the dissepiments,) 
when the pericarp bursts vertically in a line corresponding 
_ with the union of the sides of the carpels, the layers forming — 
the dissepiments being separated from each other, the valves _ 
being alternate with the dissepiments, and having their mar- 
gins turned inwards, and the cells remaining closed at the 
dorsal suture. Rhodoracew Juss. In this case each cell 
generally dehisces at the ventral suture. 
484. The dehiscence is transverse, when it takes place 
horizontally along the cells of the pericarp, as in the capsule 
of Pimpernel (anagallis.) The capsule is in this case called 
circumscissa. 
_ 485. The pericarp dehisces by pores, when there are several — 
irregular holes or openings, as in the poppy, in the cap- 
sule of which the pores are placed beneath the permanent 
_ 486. There are other more irregular varieties of dehiscenee- 
In some cases, the cells or carpels remain closed, falling 
away from the columella, as in Umbellifere. In other 
plants this takes place while the cells open, leaving an axis — 
formed of cohering placente. In some plants, as Convol- 
_ Yulus, the dissepiments remain, cohering at the axis, and — 
__ separating at the circumference from the back of the carpels, 
which dehisce at the dorsal suture, the adjoining halves of 
tis dipterous, tripterous, &c. according to the number of 
these ; it is apterous when there arenone. 
