MIRBEL'S CLASSIFICATION OF FRUITS. 
93 
h, represents the peach deprived of one half of its pulpy exterior, or 
panextern, and exposing the nut or panintern c, represents the 
nut divested of one of its valves, and showing the seed d. 
Order 7th. Baccati, (from bacca, a berry,) simple, succulent fruits, 
containing many separate seeds. The genera in this order are the 
following : 
Pyridion^'^ (fiom perideo, to lie around;) this is a regular fruit, 
crowned with the adhering calyx. The pericarp is fleshy, and has 
several cells, each of which contains one or more seeds ; the em- 
1)ryo has two cotyledons, which are large and fleshy. This genus 
contains the apple and pear. The apple, (Mahts communis,) Fig. 
102, has a round, fleshy pericarp, crowned with the calyx; the seeds 
are enclosed in five carpels, or cells, ranged around in the axis of the 
fruit ; the cells are composed of membranaceous valves. The seeds 
are tunicated, or coated ; a, represents an entire pyridion ; 6, the 
same cut vertically : and c, the same transversely. f 
Pepo, (from the Latin pepo, a melon;) this is a regular monoce- 
phalous fruit with a radiating placenta, containing many seeds ; the 
panextern is solid and dry ; the panintern is pulpy. The watermelon 
is globular, and the cucumber oblong. Fig. 103, represents the cu- 
cuMis anguria, sometimes called prickly cucumber ; a, is the entire 
pepo, which is spinous, three-celled, and many-seeded. The cells 
and seeds are shown by the same fruit cut transversely, as at b ; c, 
represents a seed, this is tunicated and dicotyledonous ; d, the same 
cut vertically. 
* Called Pome, by Linnaeus. 
t A singular fact IS observable in the fruit of the apple: when cut in slices trans- 
versely, it exhibits in its substance an exact representation of the five petals which 
existed in the flower; I have never, in any botanical work, met with a notice of this 
phenomenon, and know not on what physiological principles it can be explained. 
Order Baccati— Pyridion— Pepo. 
