122 
CLASSmOATION. 
of the Corolla ; union^ or separation of Stamens and 
^Pistils {MonoclinouSy stamens and pistils on the same corollas ; 
Diclinous, stamens and pistils on the different corollas) ; union 
or separation of anthers. 
Synopsis of Jussieu's Method. 
ACOTYLEDONS, 
Stems 
acroffcnozis. 
MONOCOTYLEDONS, 
totems 
endogenous. 
•ICOTYLKDONS. 
Stems 
exogenous. 
Class 
apetalous, 
monopetalous, 
polypetalous, 
I, diclinous. 
Corolla 
hypogynous, 
perigynous, 
epigynous, 
epigynous, 
perigynous, 
hypogynous, 
hypogynous, 
perigynous, 
epigynous, 
epigynous, 
hypogynous, 
perigynous. 
C anthers 
J combined, 
j anthers 
l_ distinct, 
4. 
5. 
6. 
7. 
8. 
9. 
10. 
11. 
12. 
13. 
14. 
15. 
These classes were at first formed of one hundred orders ; 
under the present modifications of Jussieu's method by Lindlej 
and others, they have been multiplied by establishing new 
orders of genera which could not be included in any of the 
former established orders. 
154. The acotyledons include the cryptogamous plants of Lin- 
naeus. They are called Cellulares.^ from their being formed of 
cellular tissue without a vascular system ; and are also called 
flowerless plants.^ Their leaves are destitute of veins. They 
have no seeds with cotyledons, but are reproduced from a pow- 
der-like substance, called spores., exhibiting nothing of the parts 
which constitute the seeds in other divisions of the vegetable 
kingdom. The monocotyledons constitute a portion of the phe- 
nogamous plants ; they consist principally of grasses, palms, and 
liliaceous plants ; they are endogenous as regards the structure ot 
their stems and branches ; — the veins in their leaves are straight 
and parallel. This division consists of two large groups : — 1st, 
plants whose flowers have perianths, called PetalloidcB, as the 
iris and lily ; the calyx and corolla being in three, or six divi- 
sions ; — 2d, where, instead of a proper calyx and corolla, the 
stamens and pistils are surrounded with glume-like bracts ; 
these are called Glurthoxiem j as in the grasses. The dicot/ylr 
edons include the greater portion of the phenogamous plants ; 
these are vascular in their structure, exogenous in their mode of 
growth, and their leaves are distinguished by hramching., reticu- 
late veins. 
• Tt was long asserted by botanists that every plant had a flower, althongh it might be invisible 
bnt the teim flowerless is now adopted by many for the cryptogamous family. 
Synopsis of Jussieu's method. — 154. What are the general characteristics of acotyledons ^ — Of nioro< 
Myledons 1 — Of dicotyledons 1 
