
193 DEVELOPMENT OF THE OVULUM 
XaNTHIUM indicum,—PLATE xivi.—Fie. |. 
The development of the ovule is perhaps quite the same 
as in Composite. ‘The nucleus and its coat cohere in- 
timately. The embryonary sac is visible before fecundation, 
and when the stigmata are just becoming exserted, it is then 
very small and cellular, the cells being very lax. About 
the time of fecundation, an excessively fine cellular sac, having 
the same attachments, will be found lining its cavity, both 
continuing to enlarge simultaneously until about the fall of 
the styles, when the embryo commences to be developed. 
At this period the inner sac is scarcely demonstrable. The 
embryo is as usual developed at the apex of the embryonary 
sac, its divisions are opposite to the raphe. The raphe is 
turned outwards from the axis! the foramen consequently ? 
inwards, and it always maintains this position. As the styles 
indicate a pistillum simple by abortion, this situation of the 
raphe would lead us to conclude, that it is the outer cell of 
each ovarium that is abortive. The raphe is visible at a very 
early period, it subsequently ramifies over the chief part of 
the testa. : 
The pollen at an early period, when the filaments are about 
two-thirds shorter than the anthers, consists of globules of 
considerable size, held together by a grumous matter. "The 
fibres of the cells of the endothecum are commencing their 
development. 
a. Before fecundation, at exsertion of apex of stig- 
ma. 
b. b. Embryonary sac of same. 
c. At fecundation. 
d. Inner sac. 
e. After fecundation, before fall of styles. 
f. g. Fall of style, commencement of embryo. 
h. Long section to shew the site of the raphe. 
Suddyah : 121h June, 1836. 

