PUNICA. 647 
1 
The base of the ovarium of this genus, (from which part 
: ideas of true structure are alone to be deduced) is bilocular, 
: the cells containing an indefinite number of ovula, which are 
: attached both to the axis, and to the bases of the cells, as 
well as to the lowermost parts of their outer parietes, 
Thus far it does not depart from the character of the order, 
which is essentially completely bicarpellary. Above these 
two cells are arranged in a cruciate manner, four others, which 
are accupied by thick parietal placentze, on which the ovula 
are arranged, these looking outwards, The above number 
à however would not appear to be constant, but if the bot- 
* tom be always bilocular it is quite enough. 
The explanation I consider to be obvious and totally 
different from that given by Dr. Lindley. For we have first 
in the bottom ovary the normal dicarpellary structure, and 
in addition a tendency in excess? towards parietal placen- 
tation, and the anomalies of the ovary arise first from the 
continuing inwards of the parietal placente to the axis, 
which part is also ovuliferous at the base, and second from 
growths inwards to the axis from the inner face of the 
ovary, by whlch the spurious cells are produced. 
In favour of this view Apteuxis is to be adduced, a Me. 
lastomaceous genus in which the ovary is four celled, and 
the ovula attached to the outer walls of the lower half of 
each cell, and Careya, in which the placentz are parietal. 
And in addition the structure of the stigma and style, which 
is obviously dicarpellary. 
. Lindley's view is wrong, bécause in all cases there is a 
correspondence between the number of styles and the cells 
of the fruit, when such arise from different carpella. The 
Styles and stigmata being more permanent organs than the 
ovary! asin Composita. Gramineæ etc. And because ac- 
cording to this view the placental sutures of each carpel- 
lum are not situated next the axis. The instance cited by 
Lindley of the permanent variety of apple is decisive of 
