CHAP. II. 
FRUIT. 
223 
154 155 156 159 
164 163 160 161 158 157 
154. Pyxidium of Anagallis. 155. Cremocarpiuin of Apiace®. 156, Cremocarpium of 
Apiacese cut across. 157. Siliqua of Crucifer®. 158. Siliqua of Crucifer® with the valves 
separating. 159. Siliqua of Crucifer® cut across. 160. Cremocarpium of Apiace®. 
161. Cremocarpium of Apiace® with the halves separating from their axis. 162. Bacca. 
163. Et®rio of Rubus. 164. Etario of Boraginace®. 
165a 166 167a 
165. a, Drupa; 5, vertical section. 166. Gians. 167. a,Pomumj 6, horizon ta 
section. 168. Strobilus. 
their ovules ; and the two-celled ovary of some Pedaliacese 
becomes many-celled, by a division and elongation of the pla- 
centag. In Cathartocarpus Fistula a one-celled ovary changes 
into a fruit having each of its many seeds lodged in a separate 
cell, in consequence of the formation of numerous horizontal 
membranes which intercept the seeds. A still more extra- 
ordinary confusion of parts takes place in the fruit of the 
pomegranate after the ovary is fertilised ; and many other 
cases might be mentioned. 
Every fruit consists of two principal parts, the pericarp and 
