OF THE COMPOUND ORGANS. a7 
Of the Compound Organs. 
70. These are the Root, the Stem, the Buds, the Leaves, 
the Flower, the Fruit, the Seed. They originate from the 
growth of a sEED or a BuD, each of which, when exposed in 
a fit situation to the action of certain stimuli, being endowed 
with a vital principle, is capable of enlarging and developing 
a plant presenting the various compound organs. The 
_ growth of a seed or bud is termed vegetation. The com- 
pound organs may be divided into two great classes—the 
_ Nutritive Organs and the Reproductive Organs. The for- 
_ Mer, consisting of the root, stem, and leaves, serve for the 
support and growth of the vegetable. The latter, consisting 
of the several parts of the Flower and Fruit, form the seed, 
or rudiment of a new plant, similar to that which produced it. 
_ 71. Plants are conveniently divided into several great 
_ classes, the leading characters of which it may be wall ¢ to 
Ist Division, 2d Division. 
FLOWERLEss, FLoweERING, 
(Cryptogamic), (Phenogamic), 
] AcoTyLEDoNoUs, CoTYLEDoNoUs, 
_ (without cotyledons in the seed), (having cotyledons), 
_ AcrocEnous, Enp- or Ex-ocEnovus, 
CEeLLuLar. VascuLar. — 
The Flowerless class comprises the Ferns, Mosses, Mush- 
rooms, Lichens, Sea-weeds, &c. 
usually. attended by what is popularly termed a flower,) ae 
‘ich produce a seed having seed-lobes or cotyledons; as 
7 ek sapere NEP SS tenes 2 a 
_ The Flowering class are the common herbs, trees, &c. ; ee 
guished by having organs called stamens and pistils, 
