102 
SYNOPSIS OF THE EXTERNAL ORGANS OF PLANTS. 
Organs of nu- 
trition, or parts 
necessary to the 
growth of the 
plant. 
Organs of re- 
production, or 
parts of fructi- 
fication. 
ORGANS OP PLANTS. 
THE ROOT. 
THE STEM, 
THE BUD. 
THE LEAP. 
APPENDAGES. 
SUBDIVISIONS, 
r NECK OR EOOT, STALK. 
CAUDEX, 
V. RADICLES. 
{BRANCHES, 
PETIOLES, 
PEDUNCLES, 
^ branchlets, 
( boughs, 
■{ pedicels. 
THE FLOWER. 
THE FRUIT. 
LEAFETS. 
'stipules, 
prickles, 
THORNS, 
GLANDS, 
STINGS, 
SCALES, 
TENDRILS, 
PUBESCENCE, 
BRACTS. 
CALYX ■{ sepals, or leaves. 
COROLLA •{ petals. 
NECTARY \ ^°^^ii'>^,^s a part of the corolla^ 
I sometimes a separate organ. 
STAMEN \ fi^(^'^^^t', 
STAMEN ^ ani7ier,— <! pollen. 
r stigma, 
PISTIL < style, 
I ovary or germ, — { ovules. 
Contains all parts of the fruit 
which are not the seed, as, 
PERICARP s cells, 
valves, 
dissepiments, 
columella, 
hilum, 
albumen, 
cotyledons, 
embryo, 
radicle, 
plumed 
LECTURE XVII. 
PHYSIOLOGICAL VIEWS — GERMINATION OF THE SEED. 
We have traced the various organs of the plant, through their suc- 
cessive stages of development, from the root to the bud, leaf, and 
flower, and from the flower to the fruit and seed. have seen, in 
imagination, the vegetable world fading under a change of tempera- 
ture, the " sear and yellow leaf" becoming a prey to the autumnal 
blasts, and even the fruits themselves exhibiting a mass of decayed 
matter. Were this appearance of decay and death now pre- 
sented to us for the first time, how gloomy would be the prospect ! 
How little should we expect the return of hfe, and beauty, and fra- 
grance ! No power short of Omnipotence, could effect this ; it is in- 
deed a miracle ! But we are so accustomed to these changes, that, 
"seeing, we perceive not;" we think not of the mighty Being who 
produces them ; we call them the operations of nature y but what is 
Enumerate the omans of nutrition— Of reproduction— What are the parts of the 
root ? — The Stem — Bud — Leaf— Different kinds of Appendages — Divisions of the ca- 
lyx—Corolla — Nectary— Stamens— Pistil— What are the parts of the fruit?— What 
are the parts of the pericarp 7— Parts of the seed— Of the Embryo— What remarks 
commence this lecture 7 
