110 
CLASSIFICATION OF FRUITS. 
Fig. 39. 
( Mains communis) has a round, fleshy pericarp, crowned 
with the calyx ; the seeds are enclosed in five cells, ranged 
around in the centre ; the cells are composed of membrana- 
ceous valves. The seeds are tunicated or coated ; a repre- 
sents an entire Pyridion ; b the same cut vertically ; and 
c the same cut transversely.* 
. Pepon (from pepon a melon) having a pulpy interior, contain- 
taining many seeds ; The cucumber, melon, &c. belong to this 
genus. Here is the fruit (Fig. 40.) cocumis anguria, sometimes 
Fig. 40. 
called prickly cucumber ; a represents the entire pepon , which 
is spinous , three celled and many seeded, as is shown by the same 
fruit cut transversly as at b; c represents a seed which is tuni- 
cated and dicotyledonous : d the same cut vertically. 
Bacca, containing all the fruits of this order not found in the 
other genera. The currant, whortlebery, orange, barberry, per- 
icarp of the potatoe, grape &c. are found here. In this cut 
* A singular fact is observable in the fruit of the apple : when cut in 
slices transversely, it exhibits in its substance an exact representation of 
the five petals which existed in the flower ; I have never met in any botan- 
ical work with a notice of this phenomenon, and know not on what physio- 
logical principles it can be explained. 
